ASTM A501 / EN 10210 Seamless Carbon Steel Square Tube

ASTM A501 / EN 10210 Seamless Carbon Steel Square Tube is a hot-formed structural hollow section manufactured to American and European standards for construction and engineering applications. This seamless square tube offers uniform strength throughout the cross-section and excellent load-bearing capacity for structural frameworks.

Product Parameters

Square size range: 20mm x 20mm to 500mm x 500mm .

Regular sizes include 40×40, 50×50, 60×60, 80×80, 100×100, 120×120, 150×150, 200×200, 250×250, 300×300 mm .

Wall thickness: 3.0mm to 16.0mm .

Common thicknesses: 3.0, 4.0, 5.0, 6.0, 8.0, 10.0, 12.0, 16.0 mm .

Length: 6 meters, 12 meters standard, with custom lengths available .

Processing technique: Hot-formed seamless manufacturing through piercing and extrusion processes .

Execution standards: ASTM A501 (Grade A and Grade B) and EN 10210 (S235JRH, S275J0H, S355J2H) .

Packaging: Seaworthy bundles with steel strips, waterproof wrapping, and edge protectors.

Surface treatment: Black bare, oiled, painted, galvanized, or as requested .

Chemical Composition (Typical for ASTM A501 Grade B / EN 10210 S355J2H)

Carbon (C): 0.20-0.22% max
Manganese (Mn): 1.20-1.60% max
Phosphorus (P): 0.030-0.035% max
Sulfur (S): 0.030-0.035% max
Silicon (Si): 0.45-0.55% max

Physical Properties

Tensile Strength: 485-680 MPa (ASTM A501 Grade B) / 510-680 MPa (EN 10210 S355J2H)
Yield Strength: 345 MPa minimum (ASTM A501 Grade B) / 355 MPa minimum (EN 10210 S355J2H)
Elongation: 20-22% minimum
Impact Testing: 27J at -20°C for EN 10210 J2 grades
Density: 7850 kg/m³

Product Applications

Building structural frameworks and columns. Bridge construction and infrastructure projects. Industrial platforms and walkways. Machinery frames and equipment bases. Transmission towers and support structures. Offshore platforms and marine applications. Mining and material handling equipment. This seamless square tube provides superior torsional resistance and clean aesthetic appearance for exposed structures, unlike the previously mentioned ASTM A106 Gr B Seamless Carbon Steel Pipe which serves pressure applications in oil and gas industries.