Produced by seamless or welded process from low temperature carbon steel or alloy steel, designed to maintain high toughness and impact resistance at sub-zero temperatures down to -196°C. Features fine grain structure, excellent low-temperature impact properties, good weldability, and compliance with stringent NDE requirements.
Produced by cold drawing or cold rolling seamless or welded steel tube through precise dies, followed by stress-relieving annealing. Features tight dimensional tolerances, excellent surface finish, uniform mechanical properties, and high concentricity.
Produced by piercing a solid billet and cold drawing or hot rolling without any weld seam. Features uniform structure, high pressure resistance, excellent dimensional accuracy, and good mechanical properties.
Seamless square tube is a hollow structural steel profile with a square cross-section, made from seamless round pipes via precision cold drawing, cold forming or hot extrusion. It has no welded seams, uniform wall thickness, high dimensional accuracy and excellent mechanical performance, with good bending, torsion and compression resistance.
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