ASTM A213 T21 Alloy Steel Seamless Tubes - Premium Quality from Gangsteel

At Gangsteel, we export ASTM A213 T21 alloy steel seamless tubes, designed for high-temperature service in boilers, superheaters, and heat exchangers. Compliant with the ASTM A213 / ASME SA213 T21 standard, our T21 tubes offer excellent oxidation resistance and creep strength, ideal for industrial applications.

 Gangsteel delivers high-quality T21 alloy steel tubes with reliable service.

Product Specifications

Our ASTM A213 T21 seamless tubes are manufactured to the ASTM A213 / ASME SA213 specification, ensuring precision through seamless processes.

• Standard: ASTM A213 / ASME SA213 T21
• Type: Seamless ferritic alloy steel tubes
• Size Range:
  • Outer Diameter (OD): 12.7 mm to 127 mm (0.5 in. to 5 in.)
  • Wall Thickness (WT): 0.9 mm to 12.7 mm (0.035 in. to 0.5 in.)
  • Length: Standard 6M or customized lengths
• Ends: Plain End, Beveled End, Threaded
• Surface Treatment: Varnished (outside only) to prevent rust

These specifications make our ASTM A213 T21 tubes a reliable choice for high-temperature use.

Chemical Composition

The chemical composition of ASTM A213 T21 is optimized for heat resistance, with chromium and molybdenum as key elements.

This composition ensures the durability of our T21 alloy steel tubes.

Mechanical Properties

The mechanical properties of ASTM A213 T21 tubes are designed for high-temperature strength.

These properties make our ASTM A213 T21 seamless tubes ideal for industrial applications.

Applications

Gangsteel’s ASTM A213 T21 alloy steel seamless tubes are used in:

• Power Generation: Boilers and superheaters.
• Petrochemical Industry: Heat exchangers.
• High-Pressure Systems: Gas and water piping.
• Industrial Construction: Heat-resistant structures.

The T21 seamless boiler tube excels in extreme conditions.

Quality Assurance

Gangsteel ensures our ASTM A213 T21 tubes meet standards through testing:

• Tension Test: To verify strength.
• Hardness Test: To ensure hardness limits.
• Flattening Test: To assess ductility.
• Flaring Test: To confirm deformation resistance.
• Nondestructive Test: To detect defects.

These tests guarantee the quality of our T21 alloy steel tubes.

Customization and Availability

Gangsteel offers ASTM A213 T21 tubes in various sizes:

• Outer Diameter: 12.7 mm to 127 mm
• Wall Thickness: 0.9 mm to 12.7 mm
• Lengths: Standard 6M, 5800 mm, 6000 mm, or customized
• Delivery Conditions: Normalized and tempered, hot-rolled, or cold-drawn

Shipments are available from Tianjin, China.

Why Choose Gangsteel?

As an exporter of ASTM A213 T21 seamless alloy steel tubes, Gangsteel provides:

• Reliable Supply: Consistent stock.
• Competitive Pricing: Affordable rates.
• Superior Service: Dedicated support.
• Timely Delivery: Fast shipping.

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