... : steel pipe ,weld steel pipe 1) Standard: ASTM DIN a) O.D : 16 - 610mm b) 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, ST37-2, ST52, S235, S355 ...