Hot Galvanized welding Steel Pipe and Tube 1) Standard: ASTM DIN a) O.D : 16 ... ) Wall thickness: 0.8-20mm A: Size Range: Round pipe diameter: 16mm-610mm, thickness: 0.8-20.0mmB: Surface ... finish: black, blank, bright and galvanized C: Length of each pipe: 500mm-16,000mm D: Steel grade: Q195 - Q235A, ST37 ... , DIN2394, DIN17175, JIS G3452, EN10210, EN10305 et Hot Galvanized welding Steel Pipe and Tube