Most of the requirements for use are to maintain the original appearance of the building for a long time. In determining the choice of the type of stainless steel, the main consideration is the desired aesthetic criteria, the location of atmospheric corrosion and a cleaning system to be employed. However, more and more applications are only seeking structural integrity or water impermeability.
However, in rural and urban areas in order to maintain its appearance in the outdoors, they need frequent cleaning. In heavily polluted industrial areas and coastal areas, the surface will be very dirty, and even rust. Therefore, 304 stainless steel is widely used in walls, side walls, roof and other building uses