... Alloy-Steel Pipe 34CrMo4 standard:astm a335 grade:P1, P2, P5, P9, P11, P12, P21, P22, P91, P92 Seamless Alloy-Steel Pipe 34CrMo4Standard ... P5, P9, P11, P12, P21, P22, P91, P92Usage: High temperature service 1/ Product name ASTM A335 alloy steel pipe2/ Standard ASTM SA213 ... T9, T11, T12, T22, T91, T92 A335: P1, P2, P5, P9, P11, P12, P21, P22, P91, P92 DIN17175: 15Mo3, 13CrMo44, 10CrMo910, 12CrMo195 ...