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Explore our range of boiler pipes manufactured to ASTM and ASME standards — ideal for high-pressure, high-temperature applications. Perfect for thermal power plants and industrial heating systems. Precision-engineered for reliability, performance, and long-term durability in every project.

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A Complete Guide to ASTM A513 Steel Welded Tubes

ASTM A513 Steel Welded Tubes are high-performance mechanical tubing products manufactured to meet strict industry standards. Designed for structural and mechanical applications, these tubes offer excellent dimensional accuracy, strength, and formability. In this article, we will explore everything you need to know about ASTM A513 tubing—including its manufacturing process, specifications, applications, and why it is a preferred choice in various industries. 

What is ASTM A513?

ASTM A513 is a standard specification for electric-resistance-welded (ERW) carbon and alloy steel mechanical tubing. These tubes are produced using precision processes to achieve tight tolerances in size and wall thickness. ASTM A513 tubing is known for its excellent weldability, smooth finishes, and ability to withstand heavy mechanical stress.

The specification covers different types of tubing, but the most commonly used are:

Type 1: Made from hot-rolled steel

Type 2: Made from cold-rolled steel

These classifications determine the mechanical properties and applications the tubes are best suited for.

Manufacturing Process: Electric Resistance Welded (ERW)

ASTM A513 steel tubes are produced using the Electric Resistance Welding (ERW) method. In this process, steel coils are slit, shaped into a cylindrical form, and welded using high-frequency electrical current. This results in a strong and uniform weld seam without the need for filler metal.

The ERW method ensures:

High dimensional accuracy

Excellent surface finish

Consistent mechanical properties

Cost-effective production

The tight control over the manufacturing process makes ERW ASTM A513 tubing ideal for high-precision applications.

Material Composition and Grades

ASTM A513 tubes are made from carbon and alloy steel materials that offer a balance of strength, machinability, and toughness. The choice between Type 1 and Type 2 grades allows users to select tubing based on their specific requirements:

Type 1 (Hot-Rolled Steel): Offers greater ductility and is suitable for bending and forming applications.

Type 2 (Cold-Rolled Steel): Provides a smoother surface finish and tighter tolerances, making it ideal for precision machining.

Size Range and Specifications

ASTM A513 Steel Welded Tubes are available in a wide range of sizes and thicknesses to suit various applications:

Outer Diameter (OD): 6mm to 152mm

Wall Thickness (WT): 0.5mm to 12.7mm

Length: Up to 12 meters

These dimensions allow for maximum flexibility in design and use. Whether you need tubing for light structural framing or heavy mechanical systems, ASTM A513 offers a tailored solution.

Standards and Certification

To ensure quality and compliance, ASTM A513 tubes meet a variety of international standards. These include:

ASTM A513 Specification

ISO 9001 Quality Management

API 5L Standard for Line Pipe

CE Certification for European Compliance

These certifications provide assurance that the product meets the highest levels of quality, safety, and performance.

Key Features of ASTM A513 Tubes

High Strength: Offers strong mechanical properties suitable for load-bearing applications.

Excellent Weldability: Easily joined using standard welding methods.

Good Machinability: Allows for easy cutting, drilling, and forming.

Corrosion Resistance: When alloyed or coated, offers enhanced resistance to environmental factors.

Dimensional Precision: Manufactured with strict tolerances to support accurate assembly and function.

Versatile Lengths and Sizes: Available in a broad size range for multiple industry requirements.

Applications of ASTM A513 Steel Welded Tubes

ASTM A513 tubes are extensively used across numerous industries due to their adaptability and performance. Common applications include:

1. Automotive Industry

Used in chassis, exhaust systems, and structural components due to high strength-to-weight ratio and formability.

2. Construction

Ideal for structural framing, supports, and scaffolding because of its load-bearing capacity and ease of fabrication.

3. Furniture Manufacturing

Cold-rolled Type 2 tubes are popular for creating sleek, durable furniture frames and structures.

4. Industrial Machinery

Used in hydraulic systems, rollers, mechanical assemblies, and equipment frames.

5. Agriculture

ASTM A513 tubing supports various agricultural equipment, from irrigation systems to farm machinery.

Advantages Over Other Tubing Standards

Compared to other carbon and alloy steel tubing standards, ASTM A513 offers several competitive advantages:

Cost-effectiveness: Efficient manufacturing lowers material and labor costs.

Shorter Lead Times: Readily available stock in standard sizes.

Versatility: Suitable for a wide range of environments and operational needs.

Reliable Performance: Proven in demanding structural and mechanical applications.

Conclusion

ASTM A513 Steel Welded Tubes deliver reliable, consistent performance in both structural and mechanical roles. With options in Type 1 and Type 2 grades, a broad size range, and certifications like ISO 9001 and API 5L, these tubes meet global standards for quality and strength. The use of Electric Resistance Welding (ERW) ensures precision manufacturing, making these tubes an excellent choice for automotive, construction, industrial, and agricultural applications.

Whether you're an engineer, fabricator, or supplier, choosing ASTM A513 tubing means selecting a high-performance material that stands up to your project's demands.

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API 5CT Casing and Tubing – Emirerri Steel

Emirerri Steel offers high-quality API 5CT Casing and Tubing used in oil and gas well operations. Designed for strength, durability, and resistance to harsh downhole conditions, our products ensure efficient extraction and well integrity. Available in various grades, sizes, and thread types, our casing and tubing meet strict API 5CT standards for global performance and reliability.

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Stainless Steel Heat Exchanger Tubes are designed for high-performance thermal transfer applications in industries such as chemical processing, power plants, and HVAC systems. These tubes offer excellent corrosion resistance, high-temperature strength, and superior durability, ensuring efficient heat exchange in demanding environments.

Technical Data:

Standards: ASTM A249/ASME SA 249, ASTM A269/ASME SA 269, ASTM A789/ASME SA 789

Wall Thickness Range: 0.5 to 5 mm

Delivery Condition: Annealed and Pickled, Bright Annealed, Polished, Cold Drawn, MF

Size Range: 6.53 mm to 127 mm

Length: Up to 20 meters

Bending Radius: 1.25 × Outer Diameter up to 1700 mm

Tolerance: +/- 0.05 mm

Processing Services: Cutting, Decoiling, Bending, Punching, Welding, Molding

End Finish: Plain End, Beveled End, Threaded

Technique: Hot Rolled, Cold Rolled, Cold Drawn, Extrusion Tube

These tubes ensure optimal heat transfer efficiency, corrosion resistance, and long service life in aggressive environments.

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Explore the comprehensive range of Seamless Tube Standards offered by Emirerri Steel. Our seamless tubes are manufactured to meet global specifications and deliver exceptional strength, durability, and performance across industries. From ASTM, ASME, API, and DIN to EN and JIS standards, we ensure high-quality solutions for your piping needs. Contact us today for reliable seamless tubing!