locomotive forging gear blank for CNC machine co., depend on the drawings. The first class supplier for forging machined products including ... the auto parts, the engineeing product and the minning facilities parts. locomotive ... , 34CrMo, 42CrMo, 20NiCrMo, 35CrMo, 40CrMnMo,4)standardASTM, ASME, DIN locomotive forging gear blank