... strictly by CMM Machine for high concentricity.Machined by CNC and Vertical LatheISO9001:2000Machined by NC MachineTapping the hole ... Ductile Iron, Grey Iron, Copper, Aluminum Bronze, Malleable Iron etc.2) Process: Investment Casting, Sand Casting (Resin Sand Casting, Green ... plate, Drilling, Milling, Turning, Boring, Slating, Grinding,, NC/CNC Machining etc.4) Tolerance is controlled by CMM Machine.5 ...