... aluminum motor shell Material:6063,6061,T5,T6 Finish:Anodized,powder coating Various colors available ISO9001,SGS,ROHS Aluminium motor shell ... other2. Temper: T5 or T63. Finish: Mill finish, anodized, powder coating 4. Various colors: Silver white,bronze,black,champagne,etc. 5. ... Acceptable Production Flow: 1.Melting 2.Extruding 3.Rod Furnace 4.Cooling & Smoothing 5.Heat Treatment 6.Milling 7.Stamping ...