... , powder coatiing Product description cast iron hydraulic valve body1. product name: precision maching, valve body2. materail: cast steel or ductile ... casting, CNC maching, powder coating, hydraulic test4. equipment: improted HASS 4-axis lathe, high sed lathe, drill press, milling ... axis machine center and CNC lathe imported from USA, High Speed CNC Lathe and other precision machining equipment, ...