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 ... P2,P5,P11,P12 P22Useful:High-Temperature Service Seamless ferritic alloy-steel pipe for high-temperature service Chemical properties (%)MaterialCSiMnPSMoCr %%%%max ... 0,15max. 0,500,30 - 0,600,0250,0250,87-1,131,90-2,60 Mechanical propertiesMaterialTensile N/mm2Strength Min. N ...