... .Material: ductile/grey iron 2.Various Kinds 3.Sand casting,CNC machining 4.15 years casting experience5 Certificate:ISO9001:2008.TS ... GBSandGreen Sand, Sodium Silicate Sand, Resin SandMin Tolerance0.05mmMachineLathe, CNC, Drilling Machine, Milling Machine, Boring Machine, Planing MachineWeight Rang0.1-6000kgSurface TreatmentPainting, Spraying, Galvanization