1. astm a209 T1 seamless alloy steel pipe 2. ASTM A213, A210-C, A179, A192, DIN17175 ST37.5 ST35 ... tube super heater tube carbon pipe seamless carbon tube astm a179 seamless carbon tube astm alloy steel pipe astm a209 T1 seamless alloy steel pipe2 Production StandardASTM SA213, ... , T11, T12, T22, T91, T92 A335: P1, P2, P5, P9, P11, P12, P21, P22, P91, P92 DIN17175: 15Mo3, 13CrMo44, 10CrMo910, 12CrMo195 ...