... ,OEM Other name:water pump impeller,washing machine impeller,pump impeller,impeller partsManufacturing process:investment casting,centrifugal castingMachining:turning,milling,grinding ,machineryFinishing:sand ... steel, carbon steel, alloy steel etc.2.Manufacturing Processes: sand casting, investment casting, centrifugal casting etc.3.Technology: surface treatment, polishing, machining, plating, heat ...