1.alloy steel pipe standard GB,DIN ,ASTM ASME ,JIS 2.8-1240 1- ... . material:all kinds of alloy 4.,massive stock alloy steel pipe applies to petroleum,chemical industry ,electric power,boiler with its ... :P1,P2,P5,P11,P12 P22Useful:High-Temperature Service Seamless ferritic alloy-steel pipe for high-temperature service Chemical properties (%)MaterialCSiMnPSMoCr %%%%max ...