Affected by domestic land policies and the reality of the population, cold-formed thin-walled steel (ultra-light steel) low-rise residential systems have experienced difficulties in domestic development. Many people have even shaken confidence in the system's domestic development. It is undeniable that due to the influence of national policies in recent years, the control of low-rise residential (villa) land is very strict, and the population problem has caused the demand for multi-storey and high-rise residential buildings as well as the cost. The promotion and application of ultra-light steel housing has been greatly constrained. However, the unique advantages of ultra-light steel integrated dwellings, especially through the U.S. trip to the United States, have completely strengthened our belief in continuing to develop this advanced system.

Through the practical demonstration and calculation in recent years, it can be seen that the advantages of ultra-light steel residential system are very obvious: First, through the application of various new types, environmental protection, and energy-saving materials, the superiority of the overall energy-saving and environmental protection performance of this system is further highlighted. Second, ultra-light steel with its unique nature has good earthquake resistance, wind resistance and other advantages; Third, factory production, assembly, both to ensure the stability of product quality, but also to promote the construction schedule, subject to the construction site of the natural conditions Also small. At the same time, it can also increase the room rate, reduce the generation of building pollutants, and promote the development of residential industrialization, which is unmatched by the traditional brick-concrete and wood structures. Although the direct cost is slightly higher at present, the overall cost is very competitive. This requires us to change our concepts and change our thinking.

When we visited Anderson and Worthington in the United States, we found that they were very popular and confident when promoting ultra-light steel system housing. Analysis, there are several main aspects: First, technology first, improve the node processing, make this system a perfect boutique. They made great efforts in technology research and development. The design, technical personnel and the on-site construction staff discussed each detailed part and each node together and tried repeatedly to make it mature and perfect. The node technology was protected by applying for a patent. Every year, they have dozens or even dozens of patent applications. Second, optimize the structure. They gradually optimized the process nodes and construction process through the selection of exterior wall structural plates, the determination of special screws, the most suitable (most economical) span, the connection between light steel and ultra-light steel, and the ultra-light steel building system became mature. , an architectural model with good market competitiveness. Third, pioneering and innovative. In the average person's impression, ultra-light steel buildings can only be made of low-rise residential buildings of 3 floors or less. However, U.S. counterparts have been able to use ultra-light steel to build 6- or even 9-storey multi-storey residential and commercial buildings, greatly expanding the ultra-light The scope of application of steel. We visited two multi-storey (6-storey) commercial ultra-light steel buildings built by Worthington Company in Nockholm with a building area of ​​30,000 square meters and the technology is very mature. Fourth, cost control. Worthington can be said to be very cost-effective. The technicians proceed from the reality of the system and combine it with the actual project. They constantly communicate and coordinate with the construction personnel, and gain experience and lessons from the site. They are continuously optimized from the aspects of the amount of steel used in the main structure, the replacement and use of structural plates, and the processing of nodes. In summary, as small as one silk, it has been carefully calculated and no waste is allowed. Now, their ultra-light steel construction costs are very close to the cost of traditional construction systems, and the market competitiveness is naturally higher.

Therefore, as long as we make more efforts in all aspects, highlight the advantages of ultra-light steel system, and can achieve 6 to 9 floors, then the market potential is beyond doubt. In the past two years, our company has successfully promoted this system to Nanjing, Guangzhou, Thousand Islands, Xinjiang, etc., and the projects of Poland and Sudan abroad have also been successively carried out. This year, Canada, the Caribbean, Sierra Leone, UAE and other projects are in full swing. In implementation, it should be said that a good head has been opened.

What is important now is to effectively change our concepts. Our technology, management, marketing, and construction personnel must change their concepts in a timely manner, strengthen their sense of responsibility and sense of mission, and must have the conviction that they never give up. On the other hand, we must strive to change the concept of the audience. In the short term, we cannot fully accept this system. This requires us to promote it. In the 1980s, the degree of acceptance of heavy steel structures in China was not high. After 20 years, the recognition of steel structures in China has become high. At present, there are certain difficulties in the promotion of the ultra-light steel integrated residential system, but as long as each of us who do this business has a little more responsibility and a little more firm belief, ultra-light steel integrated housing will surely come out a bright and brilliant road.