... Zhengzhou Gou's New Quenching machine tool For Valve, Cylinder Main configuration:1, CNC system control;2, Stepper motor ... drive;3, Ball screw drive;4, Cylinder linear guide rail, ball slider sliding;5, AC variable ... , simple, open or stopped at any time. And without preheating. 8) can be manually operated, but also semi-automatic ... Gou's New Quenching machine tool For Valve, Cylinder