Most of the use requirements are long-term preservation of the original appearance of the building. In determining the type of stainless steel to be selected, the main consideration is the required aesthetic standards, the corrosiveness of the atmosphere and the clean-up system to be used. However, other applications are more and more sought only for structural integrity or impermeability. For example, the roof and side walls of industrial buildings. In these applications, the owner of the construction costs may be more important than the aesthetic, the surface is not very clean can. In the dry indoor environment using 304 stainless steel effect is quite good.

However, in rural areas and cities in order to keep its appearance outdoors, you need to regularly clean. In heavily polluted industrial areas and coastal areas, the surface will be very dirty, and even rust. But to get the aesthetic effect of outdoor environment, you need to use nickel-containing stainless steel. Therefore, 304 stainless steel is widely used in curtain walls, side walls, roofs and other construction purposes, but in the serious erosion of industrial or marine atmosphere, the best use of 316 stainless steel. Several design guidelines include 304 and 316 stainless steel.