THE WINDOWS AND DOORS PROFILE ARE MADE OF ALUMINIUM 6063 ALLOY NUMBER, IT IS THE MOST COMMON ALLOYNUMBER FOR PRODUCING ALUMINIUM WINDOW AND DOOR PROFILE. 6063 ALUMINIUM ALLOY IS WIDELY USED IN BUILDING ALUMINIUM WINDOW AND DOORS EXTRUSIONS, IT HAS GOOD SURFACE DECORATION AFTER POWDER COATED AND ANODIZED SURFACE TREATMENT.
