Carbon Steel Water Glass Silica Investment Casting PartsMaterial: G25CrMo4, heat resistant steelTolerance: CT4-6Weight range: 0.05-90 kgsSurface roughness: Ra 3.2 or better Hot Tags: carbon steel water glass silica investment casting parts, China, manufacturers, suppliers, factory, wholesale, customized, buy, made in China, OEM CNC Machining Auto Parts, Composite Layer Valve Body Parts, Milled Agricultural Machine Support Bracket, Municipal Administration Engineering Machine Parts, Brass Sand Casting Pipe Fittings, Brass Turning Machining Water Pipe Fittings