... frequency induction electric furnace or electric arc furnace.4.Casting Inspection facilities:direct-reading spectrum instrument,metallographic analysis, ... facilities:oven,electric furnace,quenching and tempering equipments.6.Surface treatment:shot blast cleaning,polishing,Chrome plating,Zinc ... ,front frame,engine block,mill-ball,hammer,jaw plate,bucket tooth,front idler,excavator sprocket,link rod, ...