... :precision casting Standard:JIS,DIN,ASTM,BS OEM service available cast steel gate valveWe are a foundry which is near the Qingdao ... center,plating,HeatTreatment,ect. descriptionmaterialstainless steel, cast iron, pig iron, carbon steel, alloy steel, non-ferrous, grey iron, ductile cast, aluminum alloy, ductile iron, brass ...