Valve body Precsion casting and CNC machining Premium quality, best price Certification: ... precision parts making.Type: die casting, investment casting, gravity casting,silica solution casting, wax lost casting, water glass casting,sand casting, forging, surface treatment, hot ... alloy steel, gray iron, ductile iron, Special Alloy for Casting: Hastelloy C-22,Hastelloy C-276,Nickel 200,Hastelloy C2000 ...