name:valve body certification:ISO9001:2008 material: iron castings tandard: ASTM, AISI, DIN, BS and JIS A ... materials are graphite cast iron, ductile iron, heat-resistant corrosion-resistant cast iron, carbon steel, alloy steel, gray cast iron, chromium and molybdenum ... lathe bed casting parts,coke oven equipmentsMaterial:China Gray Iron,Ductile iron,verminal iron and so on.molding process:wood, foam, ...