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tubewellsteel · 3 years ago

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Top Features & Characteristics Of HDPE Pipe

What Is HDPE Pipe?

HDPE stands for High-density polyethylene. It is a durable, tough pipe material with unique performance features that allow it to be used in a wide range of applications and construction processes.

HDPE was one of the first pipe materials used in the ground source geothermal sector, Because of the combination of qualities that satisfy the special demands of these applications. If you're looking into HDPE pipes, you need to know who the best HDPE Pipe Manufacturer In India is.

Features Of HDPE

STRONG & DURABLE

As a result of its high impact resistance and strength and resilience, the pipes can endure both static and dynamic stresses brought on by internal (fluid) and exterior (soil) forces. The pipe is not broken or cracked by rough handling, heavy traffic, or even cold temperatures.

EXTREME ELECTRICAL RESISTANCE

Due to HDPE's extremely high dielectric strength, the pipes are frequently employed as electrical conduits. It is impossible for outside electrical currents to enter the system.

SMALL AND LIGHT

Since HDPE pipes and ducts are far lighter than traditional pipes, they are highly convenient to carry and install.

SMOOTH INNER SURFACE

The pipes and ducts have a very smooth interior surface in addition to their smooth outside surfaces, providing very little frictional resistance to fluid movement. Furthermore, even solid particles may be transported along fluids inside pipes because to HDPE's non-adherent properties.

INERT TO CHEMICALS

The pipes can handle the majority of corrosive acids and alkalies since they have great chemical resistance. The pipes are extremely helpful in chemical plants since they are wholly chemically inert.

LONG LIFE

HDPE Pipe Manufacturers calculated the life of HDPE Pipe and ducts is 50 years at normal operating temperature and pressure, compared to only a few years for traditional pipes like C.I., PVC, GI, Steel, Cement, etc.

FLEXIBLE

Extremely flexible and able to bend without cracking, HDPE pipes and ducts. This characteristic makes it possible to carry vast lengths of the small diameter pipe as coils, reducing the need for connections.

Characteristics Of HDPE

1. Corrosion Resistance

Corrosion is one of the largest problems faced with metal piping and can be extremely costly to repair. Since HDPE pipes do not rust, rot or decompose, it is not as susceptible to corrosion and therefore significantly extends the pipe’s life.

2. Efficient and Effective Joints

HDPE pipes are connected through heat-fusion welding. This is essentially heating the two pipe surfaces together, when they cool they have formed a permanent, monolithic system. Bells, spigots and mechanical joints aren’t needed, thus reducing the cost of the system. In addition, one study found that states report an average of 16% water loss due to leaking joints. Since HDPE pipe is joined using heat fusion, it is permanently leak-free

3. Trenchless Installation

Traditional systems require a large ditch to be dug out in order to properly install the pipes. While HDPE pipes can be installed in this manner, they can also be installed using trenchless installation. This involves a horizontal direction machine digging a continuous hole into the ground, which the pipe is then pulled through. This method allows for much less land disruption, making it a popular choice near rivers, lakes and busy roads.

4. Eco-Friendly

HDPE pipes have less of an environmental impact than other pipes. Some of the eco-friendly benefits include:

Less energy used to manufacture the pipes;

Lightweight and more cost effective to transport;

Heat fusion preventing any leakage;

Piping can be recycled into non-pressure pipe applications; and

Less ground disruption due to trenchless installations.

Best HDPE Pipe PE 80 Manufacturer in India

Tubewell Steel & Engg. Co. is a well-known and trusted brand in the HDPE Pipe Manufacturers in India, with both of our facilities conveniently. We HDPE Pipe Manufacturers in different types of pipe that can be used for water and sewer systems.

Some are HDPE Pipe PE 80, HDPE Pipe PE100, and HDPE Pipe Manufacturers.

We are also a leading HDPE Pipe PE 80 Manufacturer in India, HDPE Sprinkler Pipe Manufacturer in India, and HDPE Pipe PE 100 Manufacturer in India.

For More Details:

Product: HDPE Pipe PE 80 Manufacturers in India

Website: https://tube-well.com

Other product: HDPE Sprinkler Pipe Manufacturer in India

#HDPE Pipe #HDPE Pipe Fittings #Pipe Fittings #HDPE Sprinkler Pipe #High Nickel Plates Manufacturer #Nickel Plates Manufacturer

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hdpepipefittings · 3 years ago

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Different Methods for Joining HDPE Pipe Fittings

When it comes to the installations of pipes and tubes, the right kind of fitting method makes a significant difference in securing the pipes with the fittings and in preventing leaks and damage. The correct pipe connection method also ensures the structural integrity of the entire network. High density polyethylene or HDPE pipes are among the different types of thermoplastics used in plumbing and sanitary applications. HDPE pipes and fittings are often made available in long lengths and joined with compression type joints or electrofusion. Let us understand the common methods for joining HDPE pipes and fittings:

1. Butt fusion: Generally, HDPE pipes and fittings are joined through the method of heat fusion, one of which is the butt fusion method. In this method, the two HDPE pipe ends are heated to the desired temperature and are then put together with the action of force. A heater element is used in this type of fusion to melt the pipe ends. This type of joint can also be used for pipes with different wall thickness.

2. Saddle fusion: Another heat fusion method for joining HDPE pipes is saddle or conventional fusion. In this method, a saddle fusion machine is required which connects the two pipes. The pipes to be connected and the saddle fitting are both heated and fused together.

3. Socket fusion: The socket fusion method for joining HDPE pipes is also a heat fusion method. In this, both the internal and the external surfaces of the HDPE pipe are heated and the pipe to be inserted is fixed and kept in place until the joint cools and the pipes are joined together.

4. Mechanical couplings: In the category of mechanical couplings, there are several types of fittings available which need to be chosen for the particular function they serve. The most common type of HDPE fittings are mechanical compressor fittings which come with threaded compression nuts and elastomer grip rings which secure the joints. One can also choose stab type mechanical fittings and bolt fittings, with the latter being used for joining HDPE pipes with steel or other HDPE pipes.

Choose the best quality HDPE pipes and fittings for your requirements from Wavin, a global leader in the manufacture and supply of plastic pipes and fittings. Wavin’s HDPE pipes and fittings are easy to install and provide secure and leakproof connections.

#hdpe pipe fittings

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carsai-precisionparts · 3 years ago

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nuttystrawberrysalad · 4 years ago

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Cast Iron Pipe

Cast iron pipes can fail in many modes which in general can be summarized into two categories: loss of strength due to the reduction of wall thickness of the pipes, and loss of toughness due to the stress concentration at the tips of cracks or defects. Even in one category there can be many mechanisms that cause failure. The strength failure can be caused by hoop stress or axial stress in the pipes. A review of recent research literature (Sadiq et al., 2004; Moglia et al., 2008; Yamini, 2009; Clair and Sinha, 2012) suggests that current research on pipe failures focuses more on loss of strength than loss of toughness. As was mentioned in Section 3.3.7(b), the literature review also revealed that in most reliability analyses for buried pipes, multifailure modes are rarely considered although in practice this is the reality. Therefore the aim of this section is to consider multifailure modes in reliability analysis and service life prediction for ductile iron pipe. Both loss of strength and toughness of the pipe are considered. A system reliability method is employed in calculating the probability of pipe failure over time, based on which the service life of the pipe can be estimated. Sensitivity analysis is also carried out to identify those factors that affect the pipe behavior most.

Buried pipes are not only subjected to mechanical actions (loads) but also environmental actions that cause the corrosion of pipes. Corrosion related defects would subsequently cause fracture of cast iron pipes. In the presence of corrosion pit, failure of a pipe can be attributed to two mechanisms: (i) the stresses in the pipe exceed the corresponding strength; or (ii) the stress intensity exceeds fracture toughness of the pipe. Based on these two failure modes, two limit state functions can be established as follows.

Steel pipe is manufactured by the pit, horizontal or centrifugal method. In the vertical pit method, a mold is made by ramming sand around a pattern and drying the mold in an oven. A core is inserted in the mold and molten iron is poured between the core and the mold. In the horizontal method, a machine is used to ram sand around horizontal molds that have core bars running through them. The molten iron is poured into the molds from multiple-lipped ladle designed to draw the iron from the bottom to eliminate the introduction of impurities. In the centrifugal method (Figure 3.4), sand-lined molds are used that are placed horizontally in centrifugal casting machines. While the mold revolves, an exact quantity of molten iron is introduced, which, by action of the speed of rotation, distributes itself on the walls of the mold to produce pipe within a few seconds.

Many cast iron pipes made towards the end of the nineteenth century are still in use; their walls were relatively thick and not always of uniform, ‘Spun’ grey iron pipes were formed by spinning in a mould and produced a denser iron with pipes of more uniform wall thickness; they comprise a large proportion of the distribution mains in many countries. Three classes of such pipes were available: B, C, and D for working pressures of 60, 90, and 120 m respectively; classes B and C were more widespread. Carbon is present in the iron matrix substantially in lamellar or flaky form; therefore, the pipes are brittle and relatively weak in tension and liable to fracture. The manufacture of grey iron pipes has been discontinued in most countries, except for the production of non-pressure drainage pipes.

Since cast iron pipes are deteriorating rapidly and causing so many maintenance problems (Section 4.3.2), the distribution network is currently undergoing an extensive replacement scheme with old, leaking and corroded cast iron pipes being replaced by MDPE and uPVC. These new plastic pipe materials are thought to support fewer bacteria than the old hubless cast iron pipe. Their surface is smoother and therefore the surface area smaller and they are not subject to corrosion or biodeterioration.

In addition, the effectiveness of a disinfectant is greatly influenced by the pipe material. Biofilms grown on copper or PVC pipe surfaces were inactivated by a 1 mg/l dose of free chlorine or monochloramine. However, on iron pipes 3-4 mg/l of chlorine or monochloramine was ineffective in controlling the biofilm (LeChevallier et al., 1990) because, as discussed before, the chlorine will preferentially react with the iron surface (LeChevallier et al., 1993). It appears that the option of changing pipe materials to ones with lower biofilm-forming potentials would reduce the biofilm problem.

Many cast iron pipes made towards the end of the 19th century are still in use; their walls were relatively thick and not always of uniform, ‘Spun’ grey iron pipes were formed by spinning in a mould and produced a denser iron with pipes of more uniform wall thickness; they comprise a large proportion of the distribution mains in many countries. Three classes of such pipes were available in the UK: B, C and D for working pressures of 60, 90 and 120 m, respectively; classes B and C were more widespread. Carbon is present in the iron matrix substantially in lamellar or flaky form; therefore, the pipes are brittle and relatively weak in tension and liable to fracture. The manufacture of grey iron pipes has been discontinued in most countries, except for the production of non-pressure drainage pipes.

Lead joint (a) is accomplished by melting and pouring lead around the spigot in the bell end of the pipe. After the lead has cooled to the temperature of the pipe, the joint is caulked using pneumatic or hand tools until thoroughly compacted with the caulking material and made water tight.

Cement joint (b) is started at the bottom with the cement mixture, and the mixture then caulked. Pipe with cement joints must not be filled with water until after 12 h has elapsed.

Roll-on joint (c) requires a round rubber gasket that is slipped over the spigot before it is pushed in the bell. Braided jute is tamped behind the gasket, after which the remaining space is filled with a bituminous compound.

Push-on gasket joint (d) is made by seating a circular rubber gasket inside the contour of the socket bell. The slightly tapered pipe end permits the gasket to fit over the internal bead in the socket. A special lever action tool, manually operated, then allows the bell and spigot past the gasket, which is thereby compressed as it makes contact with the bottom of the socket.

Mechanical joint and pipe joint should be thoroughly cleaned to remove oil, grit, and excess coating and then painted with a soap solution. Cast iron gland is then slipped on the spigot end with the lip extension toward the socket (or bell) end. The rubber gasket, also painted with the soap solution, is placed on the spigot end but with its thick end toward the gland. The entire section of the pipe is pushed forward to seat the spigot into the bell; the cast iron gland is moved into position for bolting.

The Putney gas explosion was a real wake-up call, and accelerated the replacement of old gray ductile iron pipe fittings by polymers such as medium-density polyethylene (MDPE), high-density polyethylene (HDPE), and unplasticized polyvinylchloride (UPVC). HDPE has a tensile strength of ≈20–37 MN m−2 (which is more than adequate for typical internal pressures). Most importantly, though, it has a Young’s modulus which is ≈150–300 times less than cast iron. This means that HDPE pipes can deflect under misalignments of the kind experienced in the Putney explosion without reaching the fracture stress. Even better, over a long time the polymer also creeps, which further dissipates the stresses caused by misalignment. Polymers are also very resistant to corrosion, so should last indefinitely in the ground.

But how are lengths of polymer pipe joined together? The following clip shows how:

http://www.youtube.com/watch?v=83PTUoFBq9s&feature=related

The steps in the process are shown in Figure 27.11. First, the ends of the pipe to be joined are machined flat and parallel using a double-sided rotating disk planer. Then the ends are heated with an electric hotplate. Finally, the hot faces are pushed together using a hydraulic ram. The softened thermoplastics fuse together, making a high-strength leak-proof joint. This is a quick, reproducible method, which requires little skill on the part of the operator—in marked contrast to the lead-filled spigot-and-socket joints of the old cast iron system. Figures 27.12 and 27.13 show an alternative joining method, where one end of the pipe has an enlarged bore into which the mating pipe can be inserted. This overlapping joint can then be fixed and sealed with polymer adhesive. It would be hard to envisage any replacement materials so well adapted to this challenging environment than thermoplastics.

The earliest oil pipelines in the United States, laid in the 1860s, were typically constructed of 2-in cast-iron pipe threaded and screwed together in short segments. Oil was propelled through the pipeline using steam-driven, single cylinder pumps, or by gravity feed. These early pipelines, seldom more than 15 mi in length, were prone to bursting, thread stripping at the pipe joints, and frequent pump breakdowns mainly due to the percussive strain on the lines caused by each stroke of the pump which “resembled the report of a rifled gun.” Development of the four-cylinder Worthington pump revolutionized the transportation of petroleum by pipeline with its constant flow and uniform pressure (The Engineering and Building Record, 1890; Scientific American, 1892; Herrick, 1949; Williamson and Daum, 1959).

By the 1870s, a 2000-mi network of small-diameter gathering lines connected the oil-producing areas with regional refineries and storage points on the railroads and rivers where the oil could be shipped to refineries via railcars or ships and barges. Typical crude oil trunk lines were constructed of 18-ft sections of lap-welded wrought steel pipe fittings 5 or 6 in in diameter joined with tapered, threaded joints manufactured specifically for pipeline service. The pipe was generally buried 2 or 3 ft below the ground surface. Worthington-type pumps were used as the motive power for the lines, and the pumps were powered by steam generated by coal-fired boilers. Pump stations were spaced as needed to maintain the flow of oil over the terrain crossed by the lines. At the pump stations, oil was withdrawn from the lines and passed through riveted steel receiving tanks some of which were 90 ft in diameter and 30 ft high holding about 35,000 barrels (The Engineering and Building Record, 1890; Scientific American, 1892; Herrick, 1949). Diesel-powered pumps began to replace steam power around 1913–1914 (Williamson et al., 1963).

It was not until May 1879 that the Tidewater Pipe Company, Ltd. began operation of the first long-distance crude oil pipeline covering the 100 mi between Coryville and Williamsport, Pennsylvania, to connect with the Reading Railroad. The line was constructed of 6-in wrought-iron pipe laid on the surface of the ground (except when crossing cultivated land) and relied on only two pumping stations, one at Coryville and the other near Coudersport. The expansion of the oil under the hot summer sun caused the line to shift as much as 15–20 ft from its intended position, knocking over telegraph poles and small trees, but no serious breaks occurred. In the spring of 1880, Tidewater buried the entire line (Williamson and Daum, 1959).

The success of the Tidewater pipeline set the pattern for the construction of other long-distance crude oil “trunk” lines which sprang up in the early 1880s connecting the oil regions of Pennsylvania with refining centers in Cleveland, Pittsburg, Buffalo, Philadelphia, Bayonne, and New York City (Williamson and Daum, 1959).

By 1905, the oil fields in the Oil Regions of Appalachia stretching from Wellsville, New York, through western Pennsylvania, West Virginia, eastern Ohio, Kentucky, and Tennessee were becoming depleted. The new oil fields discovered during the early 1900s in Ohio, Indiana, Illinois, southeastern Kansas, northeastern Oklahoma, and eastern Texas were quickly connected by trunk lines to the eastern refining centers as well as the new western refineries in Lima, Ohio; Whiting, Indiana; Sugar Creek, Missouri; and Neodesha, Kansas (Johnson, 1967).

The proximity of the prolific Spindle Top Field to the Gulf coast made the area around Houston, Port Arthur and Beaumont, Texas, and Baton Rouge, Louisiana into a petroleum refining center. Regional pipelines were built to carry crude oil the relatively short distances to the Gulf coast refineries (Johnson, 1967). The oil tanker ships operating from the Gulf coast ports competed for and obtained control of most of the long-distance oil transport to the refineries and markets along the eastern seaboard by the mid-1920s (Williamson et al., 1963; Johnson, 1967).

Until the 1930s, when large-diameter steel pipe was in widespread use, the carrying capacity of oil pipelines was increased by laying an additional line or lines alongside the original pipe within the same right-of-way. This practice was known as “looping.” The carrying capacity of 8-in lines was about 20,000 barrels per day, while 12-in lines handled 60,000 barrels per day. Since the largest refineries operating in that era were designed to handle crude at the rate of approximately 80,000–100,000 barrels per day, the carrying capacity of the pipelines built by a refiner were carefully gauged to support the refinery with little excess capacity to offer to others (Wolbert, 1979; Willson, 1925).

By 1941, just prior to the United States’ entry into World War II, there were about 127,000 mi of oil pipeline in the United States composed of about 63,000 mi of crude oil trunk lines, about 9000 mi of refined product lines, and about 55,000 mi of crude gathering lines (Frey and Ide, 1946). From February through May 1942, 50 oil tankers serving the Atlantic seaboard were sunk by German submarines. The continuing attrition of the tanker fleet by enemy action and the diversion of tankers to serve military operations abroad caused a tremendous increase in the use of pipelines to transport both crude oil and refined products to the east coast which consumed about 40% of the petroleum produced in the United States. In June 1941, before the Pearl Harbor attack, pipelines delivered about 2% of the petroleum needed by the east coast; by April 1945, pipelines carried 40% of this critical supply (Frey and Ide, 1946).

The wartime expansion of the pipeline network added more than 11,000 mi of trunk and gathering lines, repurposed over 3000 mi of existing pipelines in new locations and reversed the direction of flow of more than 3000 mi of other lines (Frey and Ide, 1946). One of the pipelines converted from products delivery and reversed in flow direction to convey crude oil to east coast refineries during the war was the Tuscarora pipeline. After the war, it was reconverted and its direction of flow was again reversed to convey gasoline from the coastal refineries to the interior (Johnson, 1967).

Noteworthy wartime pipelines owned by the federal government were the “Big Inch” crude oil line, the largest pipeline in the world at that time measuring 24 in in diameter for much of its 1254 mi length; and the “Little Big Inch,” the longest refined products pipeline in the world at 1475 mi of 20-in diameter pipeline (Frey and Ide, 1946). Only during World War II did the federal government finance oil pipeline construction (Johnson, 1967).

With the proven success of long, large-diameter crude and refined products pipelines during World War II, the rapid growth in demand for petroleum products in the post-World War II era prompted a great expansion in construction of large pipelines. The number of refined products pipelines increased about 78% from 9000 mi in 1944 to 16,000 mi in 1950. Crude oil trunk lines expanded from about 63,000 mi in 1941 to about 65,000 mi 1950. The postwar increase in the diameter of the crude oil trunk lines, and therefore their carrying capacity, far outweighed the relatively modest increase in mileage (Johnson, 1967) (Table 24.1).

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australianservices1 · 4 years ago

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Why Custom Plastic Cutting?

Plastic cut to size is one of the best sold and popular plastic products, as it enables our customers to create finished products in the most effective manner. At Plastic Online we provide a wide range of plastic materials such as clear Perspex sheet cut to size, simplifying your manufacturing processes and making it possible to develop the most unique and innovative products.

Here are the types of plastic we provide cut to size:

· ABS

ABS stands for Acrylonitrile Butadiene Styrene and is an opaque thermoplastic and amorphous polymer. ABS can be heated to its melting point, cooled, and re-heated again with very little degradation, which makes it easy to recycle multiple times. Popular products made with ABS include LEGO toys, keys on computer keyboards, and plastic face-guards on wall sockets.

· Acetal Rod

Acetal rod is a semi-crystalline plastic that has good wear properties in wet environments. It barely absorbs moisture and is used in close tolerance mechanical parts and electrical insulators. Acetal rod is resistant to chemicals such as solvents but does not behave well in abrasive wear applications.

· ACM

ACM stands for aluminium composite material, a material with good dimensional stability and two times lighter than aluminium. ACM is obtained by bonding two pre-painted aluminium sheets to a polyethylene core and is used in indoor and outdoor applications requiring a sleek look and good dimensional stability.

· Acrylic

Acrylic, also called PMMA Poly (methyl methacrylate) is a transparent thermoplastic homopolymer known by multiple trade names, including Plexiglass and Perspex. It was developed as an impact-resistant alternative to glass and it was first produced in 1928. Acrylic is one of the clearest plastics on the market and is currently used for paint, acrylic nails, lenses, security barriers, medical devices, furniture, and LCD screens.

· Acrylic Mirror

Acrylic mirror is used as an alternative to glass mirror and is preferred because it has ten times the impact strength of glass. It is a plastic highly reflective mirrored surface with a grey backing on the reverse and is used in the following applications: gym mirror, display cases, retail display, architectural design, cosmetic display, and home use.

· Decorative Designed Acrylic Panel

This material is a specialty acrylic sheet used by architects, designers, and interior decorators. This type of plastic has made it possible to create attractive furniture and decorative spaces in unique textures and colours. Unlike other plastic materials, decorative acrylic sheets have unparalleled light diffusion properties.

· Corrugated Flute

Corrugated flute board has revolutionised the storage and shipping of goods due to its ability to protect various items from shocks and damage. It is a stronger alternative to paperboard cartons and comes in different wall thicknesses, known as flutes size:

o E-Flute: 1/16" thick, 90 flutes per linear foot

o B-Flute: 1/8" thick, 47 flutes per linear foot

o C-Flute: 3/16" thick, 39 flutes per linear foot

o A-Flute: 1/4" thick, 33 flutes per linear foot

· Foam PVC

Commonly used in the display and exhibition industry, PVC foam sheet has been created by German chemist Eugen Baumann in 1872. Also known as expanded PVC, it comes in a range of densities and is highly resistant to moisture and various chemicals.

· HDPE Polyethylene

HDPE (high density poly ethylene) is one of the most versatile plastic materials, with a variety of applications, such as cutting boards, piping, bleach bottles, shampoo bottles, milk jugs, and plastic bottles. Aside from food applications, HDPE is found in unexpected applications like snowboards, shoe lasts, beverage containers, and plastic surgery.

· Nylon

Nylon is a widely-used synthetic plastic material usually manufactured as a fibre. It can be melted to form fibres, filaments, and bristles, but it can also be formed into moulded products that have a high resistance to wear, heat, and chemicals.

· Polycarbonate

Polycarbonate is an amorphous thermoplastic that is naturally transparent and commercially available in a variety of colours. This material is used in applications that require internal transmission of heat and impact resistance (such as bullet-proof glass). Other applications of polycarbonate are eyewear, automotive components, medical devices, greenhouses, protective gear, and exterior lighting fixtures.

· Polypropylene

Polypropylene is a rigid and crystalline thermoplastic found in medical devices, packaging trays, household products, and battery cases. It is one of the most widely-used polymers today and it has the lowest density among plastics available on the market. There are multiple types of polypropylene available:

o Polypropylene Homopolymer

o Polypropylene Copolymer

o Polypropylene, Impact Copolymer

o Expanded Polypropylene

o Polypropylene Terpolymer

o Polypropylene, High Melt Strength (HMS PP)

· Prismatic Light Diffuser

Polycarbonate prismatic light diffusers are produced with a textured finish on one side with the purpose of transmitting and diffusing light while reducing glare. Typical applications are fluorescent light fittings, lighting lenses, and ceiling lighting tiles.

· Egg Crate

Egg crate panels are a lightweight and cost-effective solution for fluorescent light cover needs (garages, recreation rooms, office buildings, basements, kitchen and bath fixtures, and residential locations).

· PVC

PVC is the world’s third-most widely produced synthetic plastic polymer and is used in a huge range of applications, like building and construction, health care, electronics, automotive, etc.

· UHMWPE Polyethylene

Ultrahigh-molecular-weight polyethylene (UHMWPE) is the first material of choice in total joint replacements due to properties such as biocompatibility, wear resistance, and structural strength. Aside from medical applications, it is used to produce fibre, wires, and marine infrastructure.

Why Custom Plastic Cutting

There are multiple reasons to use Perspex cut to size or any other plastic cut to custom dimensions by Plastic Online Australia:

· Less error

Humans make mistakes, no matter how skilled and experienced they are. In today’s manufacturing environment, human error is a major concern. The competition is high and the demands of customers are even higher; even the smallest mistake can damage the reputation of a company. This is why Plastic Online uses laser cutting machines to obtain cut to size plastic materials.

These automatised machines are provided instructions by a computer and they do their job seamlessly, ensuring a degree of consistency that is not possible with human hands. Every product will be identical with the one preceding it, every single time.

· Precise results

Laser cutting has high accuracy and can be used for the production of parts with complex internal and external contours and different shapes.

· Customers will get the product faster

The method you choose for cutting your materials will have a major impact on the quality of the finished product and on the time needed to manufacture it. By using materials such as Perspex cut to size near, your customers will get their products sooner as Plastic Online takes care of the cutting using the latest technologies and you can focus on other important aspects of manufacturing.

Having to perform intricate design work by hand takes a lot of time, especially on complex projects. Laser cutting, on the other hand, makes it possible to obtain precise cuts in a short time-frame. The speed of laser processing is multiple times higher than by traditional methods, ensuring the readiness of products in the shortest possible time.

· Keeping things clean

Most forms of mechanical cutting generate heat and can have unwanted effects on the finished product, such as surface scuffing or minor warping. This can make lines appear inaccurate or low quality. With laser cutting performed by Plastic Online, warping is reduced to a minimum as only a small area is affected by heat. Material contamination risk is reduced as well during the cutting due to the lack of contact with physical cutting tools.

How Perspex cut to size near is obtained

Acrylic or Perspex is perfect for laser processing, a process making it possible to obtain the most creative point of sale displays and illuminated advertisements.

No additional processing is required and panels up to 25 mm can be cut efficiently and cost-effectively. The CO2 laser creates matted finishes, while the fibre laser is used to create colour changes.

A CAD file is required in order to cut a particular design from acrylic material. The process is carried out by a machine that emits laser that cuts through the material by burning or vaporizing it. This way, edges are round, surfaces are smooth, and more nuanced designs can be created.

Laser cutting needs to be performed in controlled environments by trained staff as it generates extremely high temperatures. The heat causes the material to produce fumes that can be dangerous to health. Protective gear (mask and goggles) is recommended to prevent inhaling toxic fumes.

Even if nowadays there are multiple solutions to cut acrylic, there are multiple factors involved in the cutting process, such as the brand and type of acrylic to cut, choosing the right acrylic cutting machine, setting up a working table, preparing the acrylic sheet, setting up the laser cutting acrylic machine, and handling the actual process to obtain precise and smooth cuts.

Getting your acrylic or other plastic material cut to size from Plastic Online is the most effective and productive option. You can order and purchase all your plastic material needs right here online 24/7/365. Once you’ve placed your order, our team will cut to size the type of plastic material you need and ship it to you from our Gold Coast locations to anywhere in Australia. Contact us today for all your plastic production and custom cutting needs!

#Clearperspexsheetcut3tosize #acrylicsheetcuttosize #perspexcuttosize #perspexcuttosizenear

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yummy1210 · 5 years ago

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How Are Double-Wall Bellows Made?

Double-wall corrugated pipe or bellows have been of immense importance, especially in the conveyance of water and other liquid materials from one point to another. Their high heat resistance, lightweight and durability have made double wall bellows to be one of the favourite pipes used by many companies in the transport of liquid materials. Well, the manufacturing process of double-wall bellows goes through various processes such as the double-wall corrugated pipe extrusion, and most of these processes like you would rightly guess are carried out using specially designed double-wall corrugated pipe machines.

Without much ado, let's take a quick look at some of the process and stages involved in the manufacture of double-wall bellows.

1. Bellows Design

In this stage, a piece of a metal bellows together with bellows expansion joints are fixed to a piping system which helps it to thermal growth of the pipe. During the bellows design, various cycles of heating and cooling of the piping system are involved and at each heating and cooling, the bellows are said to have undergone one complete cycle.

While the process of heating and cooling for a double wall bellows is more and frequent, a single-ply metallic bellow undergoes only a few cycles of heating and cooling since such may undergo a very few movements when used for conveying materials.

2. Forming The Bellows Tube

After the design of how and what type of bellows will be manufactured, the next stage involves making the bellows tube, and the tubes are usually corrugated. Also, in the forming stage, the outer tube is usually slightly larger than the inner tube, especially when forming multi-ply bellows. Typically, a multi-ply bellow is made up of 2-3 tubes called plies, but depending on the intended use of the bellows, there may be up to about 5 tubes (plies) or even more.

3. Forming The Bellows

In corrugating the tube, different methods can be used to achieve this, but the most common and method that is usually adopted involves the use of a mechanical dye-forming together with hydroforming. When doing this, the bellows tube is usually placed over the dye on the double wall corrugated pipe machine. While on the an, the tube is rotated so that as the dye expands and contract, there will be an even expansion over the surface of the tube without concentrating the dye or thinning over one area of the tube. After the number of convolutions that was programmed for the bellows tube is formed, this stage in the manufacture of a double wall bellows is complete.

4. Re-Rolling Process

This is a secondary stage that helps in shaping the formed metal bellows to the expected geometry as designed by the engineers. Unfortunately, this is a part in which many unscrupulous double wall bellows manufacturers skip in order to make more gains. While skipping this step, they only compress the bellows to size in a press, and this ends up reducing the durability of the finished bellows.

5. Roll Seam Welding

This is continuous process of overlapping welding on the same spot, and this process helps in joining the tubes together at the bellows neck, especially for multi-ply bellows. However, depending on how proficient a welder is, this process may or may not be required since the welder can weld the joints in such a way that there will be no leaks afterwards.

6. Expansion of the Bellows Neck To Size

At this stage, some specially designed double wall corrugated pipe machine which can help in expanding the bellows are used to make each pipe size and fit over another pipe or inside a flange. In most cases where the fits around the neck are sloppy with gaps to be filled, there is usually and increased chances of leakage.

Conclusion

The double wall bellows, which are HDPE pipes used in the transfer of sewage and other liquid materials usually undergoes a rigorous process of manufacture. However, manufacturers insincerity usually lead to the product of double wall corrugated pipes that are of lesser quality. Despite this, there is need to work with a reliable manufacturer and supplier of double wall bellows to ensure that you are using corrugated pipes that will stand the test of time.

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superplastsblog · 4 years ago

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TYPES OF PLASTIC BAGS USED IN HOSPITALS WASTE DISPOSAL

Superplast Plastic

We have come a long way with the plastics we use today. In 1862, at London’s Great International Exhibition, Alexander Parkes presented them to the world for the first time.

Plastics are made up of polymers, which are massive molecules made up of monomers that replicate themselves. Ethylene, also known as ethene, is the repeating unit of plastic bags. As ethylene molecules polymerize into polyethylene, they form long chains of carbon atoms, each of which is often bound to two hydrogen atoms.

High-density polyethylene (HDPE), low-density polyethylene (LDPE), and linear low-density polyethylene (LLDPE) are the three most common forms of plastic bags (LLDPE). LLDPE is used in mall shopping bags, while HDPE is used in supermarket bags and LDPE is used in dry cleaner garment bags. The degree of branching of the polymer chain is the most significant difference between these three materials. HDPE and LLDPE are made up of linear, unbranched chains, whereas LDPE is made up of branched chains. A plastic bag’s strength is measured by its content and thickness. We already know that HDPE is the most durable plastic bag material, but how about thickness? Thicker bags of the same material are usually more durable than thinner bags.

Plastic Bags used in Hospitals

Without the use of plastics, modern healthcare would be difficult to provide its services. Plastics have simplified and made health care less painful, from the shell of an open MRI system to the tiniest tubing. The weight of eyeglass frames and lenses has been reduced thanks to the use of plastics. Modern prosthetic systems use them to provide more versatility, comfort, and mobility. Plastic manufactured at Plastic Manufacturing Companies in UAE is used to make artificial hip and knee joints, which helps them to function smoothly and without causing complications. Plastic packaging is suitable for medical applications because of its excellent barrier properties, lightweight, low cost, longevity, and clarity. Plastics are used in many of today’s most cutting-edge medical procedures.

The product portfolios at Plastic Manufacturing Companies in UAE include bedding panels, insulin styles, IV pipes, tuber cups, eye patches, operative gloves, and testing gloves, inflatable splits, inhalation masks, dialysis tubings, disposable gowns, wipes and droppers, urine continent and ostomy products. Thus, there is an assortment of plastic disposable medical devices. There is almost endless use of plastic materials in hospitals.

When it comes to tamper-proof packaging, waste disposal, and medicine transfer, the medical and pharmaceutical industries must adhere to stringent regulations. Because of their adaptability, protective properties, and cost-efficiency, plastics are suitable for meeting the stringent requirements and specifications of the health and medical packaging industry. Plastics allow technologies that help safeguard healthcare products against destruction, keep ingredients clean, and prevent contamination. In addition, the bags in which packaging is done or waste is disposed of must adhere to the state’s regulatory guidelines for plastic disposal and recycling. The bags manufactured by Garbage Bag Manufacturers in UAE must be biodegradable. Plastic medical bags or pharmacy bags are used in these two industries for a variety of purposes, including dressing disposal waste bags, specimen bags, and adhesive closure bags, as well as bedside and respiratory setup bags.

Types of Plastic Bags Used in Healthcare Packaging

Plastics are important to guarantee the safety of health workers and patients from medication packaging to medical device packaging. Plastics maintain and secure medical devices safely and inert so that they don’t interfere with the medicinal system or medication. In exchange, these medical devices do not expose us to illnesses and diseases.

Blister packs, IV bags, and tubing, Tubing packaging, Polyolefin formable film for steam sterilization, Diagnostic device packaging are examples of medical packaging. Prescription bottles, Veterinary and human medicine dispensers, and Serum vials are examples of drug packaging.

Superplast Plastic Factory manufacture quality hospital bags in a variety of shapes and sizes, depending on their intended use and contents. Here are a few examples:

Adhesive Closure Bags: These bags have a two-wall structure and are not printed. They have a tamper-evident perforation for quick access and are used to enclose adhesives.

Bedside Bags: these bags have two strips of adhesive and can be tied to tables of bed. They are suitable for use in hospitals or nursing homes and patients.

Dressing Disposal Bags: this is a high-density plastic unprinted red bag. They are used to discard wound dressings.

Specimens Bags: These bags are designed for transferring specimens from hospitals to laboratories and feature a danger label. They have a three-wall building and an external pouch to handle the documents involved.

Pharmacy bags: These highly-density polyethylene bags are extremely durable. The adhesive tape is durable and latex-free. The bags are opaque white and thus contribute to the protection of the patient.

Respiratory Setup Bags: Drawstring Respiratory Setup Bags are used to transport respiratory devices such as endothelial tubing and bag valve masks.

Sterilization Bags: green bags are used to sterilize different appliances and equipment.

Waste Bags: Linear low-density liners with sealed bottoms are used as waste bags. They shield the recipient or handler from the contents of the package. They show the biohazard symbol as well as warnings in commonly used languages like English and Spanish. They’re used to transport and dispose of contaminated waste.

Ziplock-Reclosable Bags: These bags have a resealable seal and are used to transport medications or small medical instruments and equipment. The printing is done according to the specifications. For example, depending on the use, these bags can contain details such as “refrigerate,” “lab specimen,” “narcotic drug,” or something else important.

Water Soluble Containers: These bags are used to transport contaminated linen to the laundry and are environmentally friendly. This helps preserve hygiene by limiting medical personnel’s interaction with laundry equipment. At a temperature of 140° F, these bags are fully soluble in water. They can withstand dirty and wet linen for several hours without being damaged.

Transfer Containers: These bags are sealed with a tamper-evident seal. They have a built-in perforation for fast tearing. This seal closure is made with extremely strong adhesives. They are used to safely transport medications from the pharmacy to the location where they’re needed. They are appropriately numbered.

The plastics used in medical packaging, as well as the finished packages themselves, are subjected to a series of stringent tests to ensure their protection and suitability for the intended use, depending on the end-use application. As defined in the United States Pharmacopeia, these tests usually include physicochemical tests, extractable tests, and biological reactivity tests. Biocompatibility tests, such as pain, sensitization, and cytotoxicity tests, can also be conducted for certain applications.

WHO Legal Norms for Medical Bags

According to the World Health Organization (WHO), the following are some of the requirements that all manufacturers of such bags must meet:

The bags should shield the contents from the outside surroundings.

They must be completely dirt-free and sterile.

The correct product identity and details should be provided.

The packaging material should be non-reactive and should not respond to internal or external environments.

The packaging should not harm the product itself in any way.

The plastic packaging must protect the product from light, humidity, physical harm, oxygen, and temperature changes.

They should be able to keep the contents in their purity, power, and consistency.

In addition, there are different labeling standards for medicines or other contents. Any of the compulsory details to be shown in bags includes drug name, batch number, active ingredients list, specific storage conditions, expiration date, manufacturer’s name, and address, etc.

Intending to be a leading Biodegradable Plastic bag Manufacturers in UAE, we introduce ourselves and start our journey. We, Superplast plastic Factory, are a well-known producer in the packaging industry. Our full-service packaging firm provides all packaging options under one roof. The ability to do more, we believe, is the greatest reward for doing something. Our constant goal is to offer the best products and outstanding service to our customers.

The latest technologies, as well as advanced machines, are being used to ensure accuracy in the designs. Component handling, Clean Room Assembly, Precision Engineering and Pharmaceutical Industries, Inspection & Packing, and Automobile Industries all use our products. We have a large client base thanks to our low pricing, in-depth product expertise, and long industry presence. As being one of the leading Plastic Manufacturing Companies in UAE, we manufacture all of our products to meet the desired quality, reliability, functional, and safety requirements as a customer-focused company. For the unit’s smooth and trouble-free operation, we installed an effective state-of-the-art infrastructure facility. Furthermore, we have a wealth of manufacturing experience.

We have a strong infrastructure base that is well-equipped with cutting-edge technology. Our in-house manufacturing facility is equipped with cutting-edge equipment that is low-maintenance and high-performing. To ensure that the operation runs smoothly, the entire facility is divided into different divisions such as manufacturing, quality control, warehousing, and administration. By maintaining a high level of efficiency, our production unit meets the consumer demand for high-quality goods. Our large warehouse and extensive supplier network enable us to carry out our business operations efficiently and effectively.

The consistency and durability of our products are guaranteed by good quality raw materials. In order to achieve our place in the national market, we pursue an ethical business policy.

#plastic Bag

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riyangwelding · 3 years ago

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How Effective is a Plastic Sheet Welding Machine?

Plastic welding machines come in different types and configurations to meet different requirements. Some are ideal for specific applications, such as manufacturing water tanks and pipes, and others may be suitable for welding a wide range of thermoplastic sheets made of PVDF, PVC, HDPE, and PP. They can butt weld and bend sheets according to your project specifications, and they can handle different thicknesses from 3mm to 30mm and 1.5m to 6m wide.

A plastic sheet welding machine can save you time by continuously applying pressure during heating and cooling to create an effective molecular bond between parts. It also ensures strong plastic welded joints.

Understanding plastic welding

A plastic sheet welding machine is a device that uses heat to weld two pieces of plastic together. The process is similar to soldering, but the temperatures are much higher. Welding is often used to join pieces of plastic too large to be joined by adhesive or mechanical means such as snap-fit connections.

Plastic welding techniques vary according to the heating processes used. For instance, ultrasonic welding applies mechanical vibrations with high frequency and low amplitude to combine two plastic polymers. The vibrations create frictional heat to melt plastic polymers and a robust molecular bond, resulting in high-quality and stronger plastic welded joints.

You can also find a plastic sheet welding machine that uses the hot plate method, which heats a plate to melt the joining surfaces of thermoplastics. The two halves are brought together after melting and left for a specified period to create a permanent molecular and hermetic bond.

Hot plate welding must be performed with extreme control and precision, and a specially designed welding machine can help with that. It is ideal for any thermoplastic, especially semi-crystalline and soft thermoplastic materials like PE and PP. The machine can join large plastics and shorten cycle times, depending on how fast it reaches the material’s melting point.

More benefits of plastic welding machines

A plastic sheet welding machine can reduce costs, risks, and complications associated with traditional welding methods. Advanced machinery has a control system with the Siemens PLC button operation. The low cycle time and reduced need for consumables make it cost-effective for joining thermoplastics. Moreover, it works with any joint shape, including irregular shapes and curves. Plastic sheet welding machines are also versatile for any part dimension or size.

About the author:

This article is written by team Riyang Marketing Dept. Riyang Welding, founded in 2010, a leading China-based manufacturer specializing in thermoplastic welding machines known for their excellent engineering, ease to use, and ability to survive in the toughest conditions.

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chiefcollectivecat · 3 years ago

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Types of automatic butt welding machines

Butt welding is an effective and trouble free method for connecting PE and HDPE pipes. In pressurized pipe applications, butt welding machines can provide excellent welded joints, just like the whole pipe.

In order to achieve good joint, a stable, accurate and firm butt welder is very important. Since 2005, welping has been committed to developing, manufacturing and distributing thermoplastic welding equipment. We are happy to help you build your reputation in the pipeline project.

Automatic butt welding machine is especially suitable for the application of natural gas pipeline. Under these conditions, accuracy and stability are very important.

Product classification

According to different welding ranges, automatic butt welding machines can be divided into wp200q gas pipeline automatic butt welding machine, wp250q gas pipeline automatic butt welding machine and wp315q gas pipeline automatic butt welding machine. Appropriate models can be selected according to their own real needs.

WELPING as the leading supplier of automatic butt welding machines, it enjoys a high reputation in the Chinese and Russian markets, benefiting from stable quality and performance. If you are interested in purchasing automatic butt welding machine, please contact us decisively, and we will provide you with the best service and products to your satisfaction.

#automatic butt welding machine

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xiaoquebanxiaoqueban · 5 years ago

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Zhangjiakou Yuxian 20 800pe water supply pipe manufacturer

Zhangjiakou Yuxian 20-800pe water supply pipe manufacturer tzbi Tangshan Zhentao Trade Co., Ltd. our main products are HDPE water supply pipe, PE threading pipe, national standard PP-R cold and hot water pipe National standard PE-RT floor heating pipe, PVC water supply and drainage pipe fittings, HDPE Double wall corrugated pipe, HDPE steel belt reinforcement pipe, Clarke pipe, PE direct buried pipe, PE steel wire mesh skeleton composite pipe, fire pipe, MPP power protection pipe, CPVC power pipe, glass steel pipe, farmland irrigation pipe, cable bridge, hot-dip plastic steel pipe and other plastic pipe fittings.

Secure it securely when loading. C. Small diameter straight pipe or light pipe can be loaded and unloaded by hand. Construction and installation: Management / safekeeping A and PEM pipes shall be kept in a clean site. B. In order to prevent direct light during long-term storage, it should be placed indoors or covered with a cloth. C. When stacking the pipes on the ground for safekeeping, stones or other sharp objects shall be removed and the ground shall be leveled before stacking. D. PEM pipes shall be kept away from heat sources. E. Pay attention to the deformation of pipes in case of over loading or stacking. Technical requirement 6.1 the color of municipal drinking water pipe is blue or black, and the black pipe shall have coextrusion blue color bar. There are at least three color strips along the longitudinal direction of the pipe. Other water pipes can be blue and black. Laying pipes exposed to sunlight (such as above ground pipes) must be black. 6.2 the internal and external surfaces of appearance pipes shall be clean and smooth, without bubbles, obvious scratches, depressions, impurities and uneven colors.

For example, PVC-U gas pipe has been basically replaced by PE gas pipe. The trend that PVC-U water supply pipe is replaced by PE pipe is clear. In China, no experimental device has been set up to monitor the rapid crack growth and failure. China's plastic pressure pipe standards do not involve this problem, which shows that China's plastic pressure pipe level is at least one development stage behind the general level. General provisions for use ① pipes and pipe fittings shall have product quality inspection report of quality inspection department and certificate of conformity of manufacturer. ② During the storage, handling and transportation of pipes, non-metallic ropes shall be used for binding, and the ends of pipes shall be blocked. ③ During the storage, handling and transportation of pipes and pipe fittings, they shall not be thrown or hit by sharp cracks. ④ During the storage, handling and transportation of pipes and pipe fittings, they shall not be exposed to the sun or rain; they shall not be in contact with oil, acid, salt and other chemicals. ⑤ The storage period of pipes and pipe fittings from production to use should not exceed.

The office address is located in the economic center of Hebei Province, the sub central city of Hebei Province, Tangshan, No. 23, unit 1, 206 building, hardware and building materials City (I), Lunan District, Tangshan City, Hebei Province. It was registered in the Administration for Industry and Commerce of Lunan District, Tangshan City on January 3, 2017, with a registered capital of 3 million yuan. In the three years of the company's development and expansion, we have always provided good services to our customers Product and technical support, sound after-sales service.

Product specification 5.1 the pipes of this standard are designed according to the expected service life of 50 years. 5.2 deliver water at 20 ℃,C. Cmin = 1.25 can be used. See Table 3 for the allowable value of design stress of different grades of materials obtained from formula (1). The relationship between nominal pressure (PN) and design stress (σ s) and standard size ratio (SDR) is: PN = 2 σ s / (sdr-1) (2) where: the units of PN and σ s are MPa. For pipes made of pepe100 grade materials, the nominal outer diameter and wall thickness determined according to the selected nominal pressure and the design stress in Table 3 shall meet the requirements of table 5 and table 6 respectively. For the design and user of the pipeline system, the larger total service (Design) coefficient C can be used, and the pipe with higher nominal pressure grade can be selected at this time. Manage a. always stack the pipe diameter on the bottom. B. PEM pipes are smooth inside and outside. In case.

Once it happens, it will do great harm. For the continuous development of plastic pressure pipe, the importance of preventing rapid crack growth and failure has exceeded the requirements for long-term life strength performance. The reason glass cutting table machine is that in the same SDR (ratio of pipe diameter to thickness), the calculated long-term life long-term strength has nothing to do with the increase of pipe diameter (in fact, large diameter pipe may be safer than small diameter pipe), but the risk of rapid crack growth increases with the increase of pipe diameter. In the existing large-scale plastic test methods, such as polyethylene, polypropylene, PVC pipes, when the pipe diameter reaches a certain value, the allowable pressure determined by preventing rapid crack growth and damage is always lower than the allowable pressure determined by long-term strength problems. in other wordsAfter the allowable pressure is determined according to the requirements to prevent the rapid crack growth and damage, the long-term life (such as 20 ℃, 50 years) can be met by itself; the glass cutting table machine materials with poor fracture toughness due to rapid crack growth will be eliminated, regardless of their long-term strength performance.

Our company will continue to "science and technology, people-oriented" development concept, with reliable product quality, quality service to win the support and trust of our customers, we will always "high standard, high quality, high efficiency" as the code of conduct.

Tangshan Zhentao Trading Co., Ltd. our main products are HDPE water supply pipe, PE threading pipe, national standard PP-R cold and hot water pipe National standard PE-RT floor heating pipe, PVC water supply and drainage pipe fittings, HDPE Double wall corrugated pipe, HDPE steel belt reinforcement pipe, Clarke pipe, PE direct buried pipe, PE steel wire mesh skeleton composite pipe, fire pipe, MPP power protection pipe, glass straight line edging machine CPVC power pipe, glass steel pipe, farmland irrigation pipe, cable bridge, hot-dip plastic steel pipe and other plastic pipe fittings.

ey, Max: wall thickness; ft: reduction coefficient of temperature to pressure; TY: wall thickness tolerance at any point of pipe; σ LPL: hydrostatic strength corresponding to 20 ℃, 50 years, probability prediction of 97.5%; σ s: design stress; abbreviation 3.3: MFR: melt flow rate; mop: working pressure; MRS: required strength; PE: polyethylene; PN: nominal pressure; SDR: standard size ratio. Polyethylene pipes are produced with mixed ingredients. The mixed ingredients are blue or black. The basic properties shall meet the requirements of Table 2。 The materials used for blue pipes shall be able to ensure that the weatherability of the pipes made of the materials meets the requirements of table 12. For pe63 grade material, the method of pipe grade basic resin and masterbatch can also be used to produce polyethylene pipe, and the material performance requirements shall be tested by sampling from the pipe. Clean recycled materials produced in accordance with this standard can be mixed with new materials as long as they can produce pipes that meet this standard.

It is strictly prohibited to use the bonding method when the gap is too large. 3. When applying the adhesive, the inner side of the socket shall be applied first, and then the outer side of the socket shall be applied to coat the socket. The mouth shall be evenly applied with proper amount from inside to outside along the axial direction, without omission or excessive application (200g / m2). 4. After the adhesive is applied, it is advisable to keep the applied external force unchanged within 1 minute, and keep the straightness and position of the interface correct. 5. After the bonding, the excess adhesive extruded shall be wiped out in time, and it shall not be forced or loaded within the curing time. 6. The bonding joint shall not be constructed in rain or water, and shall not be operated below 5 ℃. 7. Connection procedure: preparation → cleaning working face → trial insertion → brushing adhesive → bonding → maintenance. The welding procedure of PE water supply pipe the PE water supply pipe is made of polyethylene and extruded by plastic extruder once. It is used in urban water supply network, irrigation and water diversion project and agricultural sprinkler irrigation project, and it is suitable for plastic pipe with acid and alkali resistance and corrosion resistance environment. Because PE pipe is connected by hot melting and electrothermal melting, the integration of interface and pipe is realized, It can effectively resist the hoop stress and axial impact stress caused by pressure, and PE pipe does not add heavy metal salt stabilizerThe welding of PE water supply pipe can be divided into the following steps, which are very important. You must pay attention to them. (1) when welding PE water supply pipe, align the two pipe axes, and fix the two pipe ends by spot welding. (2) when welding PE water supply pipe and flange plate, insert the water supply pipe into the flange plate first, After spot welding, use angle ruler to align, level and then weld. The flange plate shall be welded on both sides, and the inner side of the flange plate shall not protrude from the sealing surface of the flange plate. (3) when the wall thickness of PE water supply pipe is more than 5mm, the groove shall be cut to ensure full penetration. The groove can be formed by gas welding or groove machining, but the slag and iron oxide shall be removed, and the groove shall be polished with a file until the metal is exposed. (4) when the steel pipe is cut, The cutting section shall be perpendicular to the center line of the pipe to ensure the concentricity of the pipe after welding. (5) the flange shall be perpendicular to the center line of the pipe, the surfaces shall be parallel to each other, the flange gasket shall not protrude into the pipe, the bolt specification of the connecting flange shall be matched with the flange, and the protruding length of the screw nut shall not be greater than 1 / 2 of the screw diameter. (6) when welding the water supply pipe, The pipe joint shall be cleaned of rust, dirt and grease. (7) flange gasket shall be selected according to the requirements of drawings and specifications. Rubber gasket shall be used for cold water system and asbestos rubber gasket shall be used for hot water system. The hot fusion butt joint installation is to use the hot fusion butt welding machine to heat the pipe end (the temperature of hot fusion butt joint is 210 + 1).

The office address is located in the economic center of Hebei Province, the sub central city of Hebei Province, Tangshan City, Lunan District, Tangshan City, Hebei Province (1)No. 23, unit 1, building 206, was registered and established in the Administration for Industry and Commerce of Lunan District, Tangshan City on January 3, 2017, with a registered capital of 3 million yuan. In the three years of the company's development and expansion, we have always provided our customers with good product and technical support and sound after-sales service.

2-4mm is suitable for the width of crimping. Cooling: keep the docking pressure unchanged, let the interface cool down slowly, and the cooling time shall be subject to the rough edge rolling by hand, and no heat can be felt. Completion of docking: after cooling, loosen the slips, remove the docking machine, and prepare the next interface connection again. The main differences between this standard and iso1996 are as follows: 1. This standard only includes pipes made of peppe100 materials, excluding pipes made of pepe42 materials; 2. A chapter of definition is added to this standard; 3. The main differences between this standard and iso1996 are as follows: 1. This standard only includes pipes made of peppe100 materials, excluding pipes made of pepe42 materials Material; 2. A chapter of definition is added in this standard; 3. The performance requirements of pipes are added with the item of "elongation at break"; 4. The chapter of "inspection rules" is added; the difference between this standard and GB / t13663-1992 is that GB / t13663-1992 "high density polyethylene (HDPE) pipes for water supply" does not adopt the standard.

6.3.3.7. Polyethylene (PE) water supply pipeline hot-melt butt joint shall be made of the same manufacturer, material and brandMaterials and pipes, pipes and pipe fittings, pipe fittings and pipe fittings are connected; polyethylene pipes of different SDR series are not suitable for butt fusion connection. 6.2.4. Welding quality inspection: 6.2.4.1. Necessity of inspection; 6.2.4.2. Inspection method: the quality inspection of welding joint is destructive test and non-destructive test, which are generally used in the construction site. The main means of non-destructive test is visual inspection, which can also be called visual inspection. The main standards are as follows: the crimping shall be uniform, smooth and full, and the crimping sizes on both sides are similar; the weld seam shall be smooth and symmetrical, and the height difference between the height of the crimping and the height of either side of the flanging shall not be greater than 0.1 < its wall thickness; the cut flanging shall be free of defects such as lack of fusion, notch, hole, etc., and the staggered edge of the cut pipe end shall not exceed the wall thickness 10%. The main characteristics of PE pipe are: molecular weight, molecular weight distribution, additives and density.

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