Alloy 6063 is widely used as building aluminum windows and doors,frame of curtain wall and general accessories of industrial products. Looks beautiful after anodizing or coating surface.
6061 is widely used in industry equipment.
Alloy 3003 is one kind of antirust aluminum alloy most widely used. Mostly used as the parts requirement for high plasticity and good weldability.
Aluminum alloy is active metal, though can get porous oxidation film in air but not strong enough for corrosion resistance. After anodizing, there will be anodized film to get improve its corrosion resistance, abrasion resistance and decorative.
Powder coating can improve the corrosion resistance, and get colorful surface by powder coating for the constructional profiles.