... :JIS,DIN,ASTM,BS OEM service casting stainless steel valve ballWe are a foundry which is near the Qingdao ... stainless steel,cast iron,pig iron,carbon steel,alloy steel,non-ferrous,grey iron,ductile cast iron and so on 4 ... 6.Application: Industrial parts, Machinery parts, hardware, construction parts, valve/valve parts,train,craft,doorhandle,hinge,hydraulicpressure,construction,agricultural machinery 7 ...