... ProcessSteel,Stainless Steel,Cast Iron Machined Castings and CNC machining2.Material: Cast iron, Gray Iron,Grey Iron,Ductile Iron,alloy steel,stainless ... Investment, Lost Wax Process Steel,Stainless Steel,Cast Iron Machined Castings and CNC machining production process: ... -Sand (glass ball)blasting-CNC machining-Inspection-Assembly.8.Surface treatment: painting,polishing, plating, shot blasting, ...