... CNC machining 3.Standard:ISO,ASTM JIS,DIN , Production way : Brass by sand casting ,centrifugal casting and metal mould casting .Main ... , Cast metal part, Copper fitting, Copper nut, Bushing, Gear, Worm and Worm Wheel,Copper bushing and all non-ferrous metal alloy parts ... , Ring rolling,Shaft bushing,Spindle sleeve,T2 copper end ring,Worm wheel of tractor,Steel and Copper cylinder of Circular knitting ...