1.alloy steel pipe standard GB,DIN ,ASTM ASME ,JIS 2.8-1240 1-200 3. material:all kinds of alloy 4.,massive ... stock alloy steel pipe applies to petroleum,chemical industry ,electric ... ,P2,P5,P11,P12 P22Useful:High-Temperature Service Seamless ferritic alloy-steel pipe for high-temperature service Chemical properties (%)MaterialCSiMnPSMoCr %%%%max ...