Recommended: Octagonal non-standard steel pipes, octagonal welded pipes, thick-walled octagonal tubesSpecial-shaped seamless steel tubes include oval, triangular, hexagonal, rhombic, octagonal, semi-circular, irregular hexagonal, five-petaled plum blossom, double-convex, double-concave, melon-shaped, conical, and corrugated special-shaped steel tubes.

  Alloy seamless steel pipe categories: alloy rectangular tube, rectangular alloy seamless steel pipe, alloy welded pipe, spiral welded pipe, specifications:20*20mm-500mmWall thickness0.6mm-20mmSpiral steel pipe.Spiral steel pipe specifications219mm-2020mm,Wall thickness5mm-20mm.Seam specification available4Please provide the Chinese content you would like translated into American English.6Section1Inch1.2Inch1.5Inch2Inch2.5Inch3Inch4Inch5Inch6Inch8Inch102、108、127、133、139、159、168、177、194、219、273、325Equal specification non-standard seamless steel tubes generally refer to square or rectangular steel tubes.