casting stainless steel valve ball ISO9001:2000 Approved Process:precision casting Standard:JIS,DIN,ASTM,BS OEM service casting stainless steel valve ballWe are a foundry ... 30kg 6.Application: Industrial parts, Machinery parts, hardware, construction parts, valve/valve parts,train,craft,doorhandle,hinge,hydraulicpressure,construction,agricultural machinery 7 ...