... ,pump impeller,impeller partsManufacturing process:investment casting,centrifugal castingMachining:turning,milling,grinding ,machineryFinishing ... gradesWeight range:Depending on casting processSand casting from 5kg up to 500kgInvestment casting from 0.5kg ... Processes: sand casting, investment casting, centrifugal casting etc.3.Technology: surface treatment, polishing, machining, plating, heat ...