1.alloy pipe tube standard GB,DIN ,ASTM ASME ,JIS 2.8-1240 1- ... 3. material:all kinds of alloy 4.,massive stock alloy pipe tube applies to petroleum,chemical industry ,electric power,boiler with its ... ,P11,P12 P22Useful:High-Temperature Service Seamless ferritic alloy-steel pipe for high-temperature service Chemical properties (%)MaterialCSiMnPSMoCr %%%%max%maxA 335 ...