... machining 3.Standard:ISO,ASTM JIS,DIN ,BS Production way : Brass by sand casting ,centrifugal casting and metal mould casting .Main ... Worm Wheel,Copper bushing and all non-ferrous metal alloy parts. Our products mainly includes Copper Sheathing,Bushing, Ring rolling,Shaft ... products. Main materials involve copper,aluminum,Zinc and all kinds of high-density non-ferrous metal alloy etc. They are widely ...