... GB5310A, B, V, T11, T12, T22, T91, St35.8, St45.8, 20#, 20G, 20MnG, 20MoG, 15CrMoG, 12Cr1MoVGLow & medium ... Q345, 20Mn2, 42CrMoUsed for producing mechanical parts and pipe fittingsHydraulic TubeGB1739635#, 45#, 27SiMn, 20CrMo4, ... 8'' to 36'' OD. Models of steel pipesTensile strengthMPaYield strengthMPaElongation20390min245min20min45590min335min14min16Mn(Q345B)490min325min21min Models of steel pipes ...