Aluminium alloy flat bar 1.Alloy:3003, 3A21, 5A02, 5A05, 5456, 5754 2. ... , T4,T5, T6 3.Width: Up to 600mm Aluminium alloy flat bar and square bar at good price and nice quality ... of aluminum and aluminum alloy materials, technical advice of aluminum processing as well as making and installation of metal building curtain ...