... B, X42, X46, X52, X56, X60, X65, X70, St37,ST52Transmission of the petroleum, natural gas and waterCylinder ... 15CrMoG, 12Cr1MoVGLow & medium & high pressure boiler header, steam pipe, heating pipeStructure PipeASTM A53/A106, GB8162A, B, 20#, 45 ... #, Q345, 20Mn2, 42CrMoUsed for producing mechanical parts and pipe fittingsHydraulic TubeGB1739635#, 45#, 27SiMn, 20CrMo4, 30CrMo4Mining machineryOil Cracking ...