... ,pump impeller,impeller partsManufacturing process:investment casting,centrifugal casting etcMachining:turning,milling,grinding,machineryFinishing:blasting ... alloy steel etc.2.Manufacturing Processes: sand casting, investment casting, centrifugal casting etc.3.Technology: surface treatment, polishing, ... can expect the perfect casting parts or components from Shanghai Shantin during the lead time.T: 021 ...