... 4)Packing: By bundles, seaworthy wooden cases, steel framed cases, and simple packaging or according to the ... X70, St37,ST52Transmission of the petroleum, natural gas and waterCylinder PipeGB1824834Mn2V, 37Mn, 30CrMo, 34CrMo4Raw material for producing ... 45#, Q345, 20Mn2, 42CrMoUsed for producing mechanical parts and pipe fittingsHydraulic TubeGB1739635#, 45#, 27SiMn, 20CrMo4, 30CrMo4Mining machineryOil ...