Galvannealed steel sheet is the result from the processes of galvanizing followed by annealing of sheet steel. Galvannealed steel is a matte uniform grey color, which can be easily painted. Galvannealed sheel sheet provides excellent service when used on automobiles for both exposed and unexposed applications. It is also specified for buses, trucks and other vehicles where long life is important, garage doors, highway signs, computer chassis, and vending machines - as well as any other applications that require good resistance to undercutting corrosion of the coating. Galvannealed sheet offers a combination of good paintability, easy weldability and galvanic protection. One of the primary attributes of the galvannealed coating is that the surface accepts paint very readily. It can be painted without the application of a pretreatment, although a pretreatment will enhance the performance after painting
