... ,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, ... weight,max1500*1500*1500mm.8.Quality Certification: ISO 9001:2000.9.OEM service available.Other ...