... steel pipe 1) Spiral welded 2) Outer diameter: 219-1620mm 3) Thickness: 6-20mm 4) Standards: API, GB Packing: Strong bund steel ... pipeA: Size Range:1) Round pipe diameter: 16mm-610mm, thickness: 0.8 ... , bright and galvanized C: Length of each pipe: 500mm-16,000mm D: Steel grade: Q195 - Q235A, ST37-2, ST52 ... DIN2394, DIN17175, JIS G3452, EN10210, EN10305 etc steel pipe