Aluminum is a light silver metal, which is malleable and usually made in column, rod, sheet, foil, powder, strip and filamentous form. The weight of Aluminum is light and the corrosion resistance of that is excellent, which are two outstanding characteristics of its performance. Aluminum plate is the thickness of more than 0.2mm to less than 500mm, more than 200mm width, length within 16m aluminum material is called aluminum sheet or aluminum sheet, below 0.2mm for aluminum,200mm width within the strip or bar.