... P9, P11, P12, P21, P22, P91, P92 Seamless Alloy-Steel Pipe 34CrMo4Standard: ASTM A335Steel Gr.: P1, P2, P5, P9, ... : High temperature service 1/ Product name ASTM A335 alloy steel pipe2/ Standard ASTM SA213, SA335, A369, A209, ... 360, 440, 460, 620 JIS G3458: STPA12, STPA20, STPA22, STPA23, STPA24, STPA25, STPA26 JIS G3462: STPA12, STBA13, STBA20 ... ARE YOUR BEST CHOICE Seamless Alloy-Steel Pipe 34CrMo4