The iron and steel industry is the material basis for the development of the steel structure industry. The technological progress of the iron and steel industry has created favorable conditions for the application of steel structures. Some large enterprises in the domestic steel industry have begun the research and development of steel varieties and technologies for building structures. Successively developed high-strength steels, fire-resistant, weather-resistant, seawater-resistant, laminar flow tear-resistant, low-temperature-resistant steels, as well as H-shaped steels, high-performance color-coated steel plates, cold-formed steels, etc., Has laid a good application foundation for the development of the steel structure industry.