... , P12, P21, P22, P91, P92 Seamless Alloy-Steel Pipe 34CrMo4Standard: ASTM A335Steel Gr.: P1, P2, P5, P9, P11, P12, P21, P22, P91 ... , P92Usage: High temperature service 1/ Product name ASTM A335 alloy steel pipe2/ Standard ASTM SA213, SA335, A369, A209, A250, G3462, G3467 ... / Length: 6m-12m, also can be manufactured by customers' requirements 7/ Type: Seamless 8/ Type of ends: Plain ends or bevel ...