... :sand casting,centrifugal casting etcMachining:turning,milling,grinding,drilling,machineryFinishing:sand blasting,polishing,electro-polishingAttention:the inspection report we providing is in accordance with ... alloy steel etc.2.Manufacturing Processes: sand casting, investment casting, centrifugal casting etc.3.Technology: surface treatment, polishing, machining, plating, heat treatment etc.4. ...