... parts, the engineeing product and the minning facilities parts. locomotive transmit systerm parts Name Category1) axle truck, trailer,bus2) Balance shaftAutomotive ... steel20CrMoTi, 34CrMo, 42CrMo, 20NiCrMo, 35CrMo, 40CrMnMo,4)standardASTM, ASME, DIN transmit systerm parts