At present, the steel used in China’s steel structure industry only accounts for about 4% of the total steel in the world, which is far away from the proportion of about 10% in developed countries.Domestic steel can basically meet the needs of steel structure processing, but there is still a long way to go in terms of detailed product standards and performance compared with foreign countries, such as high-strength, large standard, super thick H-beam, high-strength and super thick plate, etc.Now in Japan, Q690 steel is used for construction and bridge construction, and q960 mechanical steel has been used skillfully.

The development of steel structure is constantly promoting the development of high-performance steel. Now the national standard steel structure design code is being revised. It is planned to include Q390, Q420 and Q460 in the code, and change the situation that Q235 and Q345 are the main structural steel for a long time.

The output value of China;s steel structure is about 23 million tons, and the output value exceeds 300 billion yuan. The total amount of steel structure will maintain a growth rate of 9% – 10% every year. By 2015, it will double to 50-65 million tons, accounting for 10% of the total output value of the country;s crude steel, and the construction of steel structure houses accounts for about 15-20% of the total construction of the country;s houses.

In the future, the variety, quality and standard of domestic steel should not only satisfy the development needs of domestic and foreign steel structures, but also take the lead in the world in the use and development of high-performance steel products in relevant fields; the products, accessories and supporting technical products of steel structures should reach the advanced level in the world.The potential market and independent innovation technology development of steel structure housing, steel structure bridge and non-standard, complete equipment manufacturing (including new energy wind power, nuclear power, smart grid, three in one, marine engineering steel structure network, etc.) with outstanding key points, large quantity and wide range, and outstanding output value proportion in the industry, to promote the overall improvement of steel structure housing construction quality, improve the service life and reality of buildings.The practice life is more advanced, the improvement of relevant supporting products and components is promoted, and the steel structure industry is gradually becoming a strategic emerging industry in China, and the goal of strengthening the country with steel and steel structure is beginning to be achieved.