1.stainless steel pipe 2.carbon steel pipe 3.sch40 black steel pipe 4.ERW,LSAW,SSAW 5.black steel seamless pipes astm a106 Our seamless steel pipes are in accordance ... 2MMWall thicknessSGP, STD, SCH40, SCH80, SCH160. XS,XXS and so on.StandardsANSI B16.9 / 16.28, ASTM A53/A106, API 5L, ASME B36 ... MaterialASTM A106,A53GRB,A53-A,A106-A,A192,A226,A315-B,A106-B,A178-C,A210-A-1,A210-C,A333-1.6,A334-1.6,A333 ...