... make contact with us Detailed Product Descriptionseamless steel pipe (1) mill test certificate (2)iso9001 certificate ... ,A106B,ST37,ST45,ST52,10#, 20#, 35#, 45# 40Cr, 16Mn, 20Cr,40Cr,35CrMo,42CrMo,12CrMoV, ... 10CrMo910, 12Cr1MoV, 15CrMo etc.seamless steel pipe Main materialStandard accordingspecification Alloy pipeCr5Mo.(P5.STFA25. ... T5312-199925-426*4-45 Fluid pipe20Q345GB/T8163-199925-560*4-40