... -1992, GB/T3091-2001, GB/T9711.1-1997, Material: ASTM A53, SS400, Q195-235, Q345(A, B, C), 16Mn, J55, ... Q125 Surface treatment: Painting, oil coating, Anti-corrosion &Insulation. Ends: Pipe cap, Beveled edges or plain end, the protection of ... pipe end, anyway according to customers' requirment. Package: Bulk cargo, pipe cap, steel strips bundled. carbon steel line pipe