SupplyOEM Stainless Steel Precision Machining Silica Sol Investment Casting Place of Origin: Shandong, China Process: Lost Wax Casting Certificate: ISO9001 Casting Tolerance: CT5-7 Machining Process: CNC Finishing Process Casting Lost Wax Casting , Water Glass Casting Material: Stainless Steel 304 316 316L,Duplex Stainless 2205,Alloy Steel Heat Treatment: Shot Blasting,Sand Blasting ,Carburizing ,Nitriding,Anneal, Quenching,Solution,Hardening,Tempering