... . material:all kinds of alloy 4.,massive stock alloy steel pipe applies to petroleum,chemical industry ,electric power,boiler ... 20#,35#,45#,A106Gr,A;A106Gr.A;A106Gr.B and low alloyed steel OEM can availableASTM A335steel grade:P1,P2,P5,P11 ... ,P12 P22Useful:High-Temperature Service Seamless ferritic alloy-steel pipe for high-temperature service Chemical properties (%)MaterialCSiMnPSMoCr %%%%max%maxA ...