Seamless steel pipe O.D: 60.3~630 mm W.T: 4.5~80 mm Standard: ASTM A106/A53 Gr.B, ASME B36.10M - 1996, DIN17175, DIN1629. Packing: In bundles. Supply ability: 200MT/month Marking: as per customers' requirements Galvanizing is available according to clients' requests