steel pipe 1) Spiral welded 2) Outer diameter: 219-1620mm 3) Thickness: ... , GB Packing: Strong bund steel pipeA: Size Range:1) Round pipe diameter: 16mm-610mm, thickness: 0.8-20.0mm2) Square tube ... finish: black, blank, bright and galvanized C: Length of each pipe: 500mm-16,000mm D: Steel grade: Q195 - Q235A, ST37-2 ...