Now, people have been fully aware of the advantages of the use of stainless steel in structural applications. There are several design criteria were included in the 304 and 316 stainless steel. Because of the "double" of 2205 stainless steel has the atmospheric corrosion resistance and high tensile strength and the limited strength com., so good, the European guidelines also include the steel. The shape of the product in fact, stainless steel with standard shape and size of metal manufacturing, and there are many special shape. The most commonly used product is made of sheet and strip, also use the special products, production for example, the production of Hot-Rolled Structural Steel and the structure of extrusion type steel. And there are round, oval, square, rectangular and six angle pipe or seamless steel pipe and other products, including profiles, bars, wire rod and casting. Ten, the surface state? As will be discussed later, in order to meet the aesthetic requirements of architects, has developed a wide variety of commercial surface processing. For example, the surface can be highly reflective or dull; can be smooth, polished or embossed; can be colored, the color, electroplating or patterns in the etching stainless steel surface, can also be drawing, in order to meet the designers of appearance requirements. To keep the surface state is easy. Just occasionally wash will be able to remove the dust. As a good corrosion resistance, it can easily remove graffiti surface contamination or other similar surface contamination.