... mining/coal mining machiery/coal engineering machin Material:42CrMo Net Weight:19.4KGProcess:machiningUsage: be adapted to mining/coal mining machiery/coal ... lathes: auto lathe, CNC machining, CNC turning, CNC cutting, CNC milling, threading, tapping, drilling, etc.Process: ... auto lathe, CNC machining, CNC turning, CNC cutting, CNC milling, threading, tapping, drilling, etc.Certificate: ...