carbon seamless steel pipe Standard: API 5L, ASTM A106 , ASTM A53, ... .x56.gr.b, gr.c, J55.N80.L80.K55.P110 Carbon seamless steel pipeStandard: API 5CT, A PI 5L, API 5L ... , ASTM A53 BGrade: K55.J55.N80-1, P110, B, AO.D: 1/2" TO 12"W.T: SCH10-SCH160Length: upon your ...