... Bar and steel plate, Drilling, Milling, Turning, Boring, Slating, Grinding,, NC/CNC Machining etc.4) Tolerance is controlled by CMM Machine.5 ... Gate ValveMaterial: Alloy Steel, Stainless SteelMachined from round bar by NC Machine or CNCChecked by Go & No go gageNDT Test can ... steel, alloy steel and others.3. They are machined by CNC and checked by GO& No go gage.4. Moly spray ...