... :Grade A Certificate:ISO9001:2000 Material: carbon stee ,stainless steel ,forged carbon steel ,alloy Product DescriptionOuter Diameter: 10mm-1200mm Wall Thickness: 0 ... ASTM A53, SS400, Q195-235, Q345(A, B, C), 16Mn, J55, K55, N80, L80, C90, C95, P110, Q125 Surface treatment: Painting ... according to customers' requirment. Package: Bulk cargo, pipe cap, steel strips bundled. carbon steel line pipe