... mining/coal mining machiery/coal engineering machin Material:42CrMo Net Weight:19.4KGProcess:machiningUsage: be adapted to mining/coal mining machiery/coal ... 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: ISO 9001:2008Our company can provide ...