... 5Brand:Shantin,OEM Other name:water pump impeller parts,pump impeller,impeller partsManufacturing process:investment casting,centrifugal casting etcMachining:turning,milling,grinding,machineryFinishing: ... Manufacturing Processes: sand casting, investment casting, centrifugal casting etc.3.Technology: surface treatment, polishing, machining, plating, heat treatment etc.4.Application: pump & valve, ...