Alloy pipe, all kinds of specification is available.We can meet your ... ,A335P91,A335T91,P22,P11,P12,P5,SA106B,106C,J55,K55 3) Standard: GB/T17396-1998(ASTM/BS/JIS/NF/DIN ... )3) Standard: GB/T17396-1998(ASTM/BS/JIS/NF/DIN)Standard: ... -1988Material: 20#,45#,16Mn,27SiMn,12Cr1MoV,15CrMo,10CrMo910,Cr5Mo,WB36 Alloy seamless Pipe