... steel pipe 4.ERW,LSAW,SSAW 5.black steel seamless pipes astm a106 Our seamless steel pipes are in accordance with a wide range of standards ... . XS,XXS and so on.StandardsANSI B16.9 / 16.28, ASTM A53/A106, API 5L, ASME B36.10M---1996, DIN2605 / 2615 / 2616, JIS ... P2311/2312 MaterialASTM A106,A53GRB,A53-A,A106-A,A192,A226,A315-B,A106-B,A178-C,A210-A-1,A210 ...