Weathering resistant steel (that is, atmospheric corrosion resistant steel) can be sustainably developed and innovated after integrating into the new mechanism, new technology and new process of modern metallurgy. It is one of the series steel at the forefront of the world’s super steel technology. Weathering steel is made of common carbon steel adding a small amount of copper, nickel and other corrosion resistant elements, with the strength of high-quality steel, plastic extension, molding, welding and cutting, abrasion, high temperature, etc.; The weatherability is 2~8 times of the general carbon steel, the coating property is 1.5~10 times of the general carbon steel, can reduce the use of thin, bare use or simplify the use of coating. The steel has the characteristics of rust resistance, corrosion resistance, thinning and consumption reduction, labor saving and energy saving