... investment casting parts: 1. Materials:carbon steel, alloy steel, stainless steel, brass, brozen and other special steel materials 2. Usage: auto&motocycle, ... Monitor, hydraulic universal testing machine, magnetic particle inspection,FSQ Vacuum Foundry Spectrovac. 8.Surface finish: polishing, oiled(rust-prevented ... , sandblasting, painting, powder-coating, Lost wax casting stainless steel Impeller