... to duralumin2. Resistant corrosion,resistant aging, fastness, easy installation.3. Utility: machinery, autos, equipments.4.Surface treatments:deburr,polishing ... ,ect. 2.Process: 1.Tooling making (leadtime: 7-15 days)2.Casting: remove all burrs& sharp edges,ball ... blasting, sand blasting.;3.Machining: cutting,CNC machining, milling, drilling, griding,punching,screwing ...