Analysis of the development trend of steel structure industry

First, the market competition is relatively fierce, and the pattern of the strongest is expected to be strong.

Currently, the market concentration of China's steel structure industry is low, and the CR5 of steel structure industry is only about 5%, while the market share of the top three steel structure enterprises in the United States is more than 50%. From the perspective of enterprise type, China's steel structure enterprises are roughly divided into three categories, one is the construction engineering general contracting as the core business, steel structure is mainly used for the system within the large central enterprises, such as China Construction Engineering (China Construction Steel), Shanghai Baoye, etc.; the second is the manufacturing of steel structure products, steel structure construction contracting and other main business of the private sector, such as the Honglu Steel, Jinggong Steel, etc.; the third is the small and medium sized steel structure products Manufacturing enterprises.

From the perspective of the number of enterprises, 2019 China's annual output of steel structure more than 1 million tons of enterprises have 4, 500-1 million tons of enterprises 11, 100-500,000 tons of enterprises 39, 50-100,000 tons of enterprises 33, more small and medium-sized enterprises in the industry, less head enterprises.

From the product point of view, construction heavy steel structure and other high-end steel structure products are more difficult in terms of precision requirements, price difficulty and manufacturing process, the barriers are relatively high, the competition depends on enterprise technology, product quality, capital strength and scale, etc., and the industry concentration is relatively higher; light steel structure technology is mature, the threshold of entry is low, the small and medium-sized enterprises are flooding into the market, and the fierce competition leads to lower gross margins of the products, and the enterprise's competitive Advantage mainly relies on large-scale production. 2016 steel price fluctuations superimposed on the downstream construction industry demand downturn, part of the small steel structure processing enterprises closed down, the concentration of the steel structure industry has been improved to a certain extent. 2019 the number of enterprises with a production capacity of 50,000 to 100,000 tons of steel structure once again showed a significant decline, and it is expected that with the improvement of the technical standards of the steel structure and the industry norms will further accelerate the exit of small and medium-sized enterprises from the market. The pattern of steel structure industry is expected to be strong.

Second, steel structure industry accelerates towards standardization, scale and marketization.

In 2020, the Ministry of Housing and Construction (MOH&C) proposed a “1+3” standardized design and production system for assembled buildings, i.e., to start compiling one design selection standard for assembled residential buildings, and three size guides for major components and parts (size guide for major components of steel residential buildings, size guide for major components of assembled concrete residential buildings, and size guide for major parts of residential assembled buildings). (the guide to dimensions of major components for steel structure houses, the guide to dimensions of major components for assembled concrete structure houses and the guide to dimensions of major components for assembled house decoration). We expect that this system will comprehensively open up the design, production and engineering construction links of assembled houses, promote the synergistic development of the whole industrial chain, and can effectively solve the interface between the standardized design of assembled buildings and the application of standardized components and parts.

Among them, the “Guide to Sizing of Main Components for Steel Structure Residence” for the steel structure industry is expected to promote the steel structure industry to accelerate its progress towards standardization, scaling and marketization. By comprehensively enhancing the efficiency of design units and construction enterprises, the Guide is expected to further reduce the construction cost of assembled steel structures, which will be conducive to the continuous expansion of steel structure market share.

Third, photovoltaic building for the new direction of green building, new buildings gradually mandatory shift to photovoltaic building

Green building is an important way to reduce emissions in the construction industry, and the trend is to promote green building. The promotion of green building in the construction industry has a long history, during the 14th Five-Year Plan period, under the catalyst of the dual-carbon target, the green building large area spread has been the general trend. 2020 July, the Ministry of Housing and Construction, the Development and Reform Commission and other seven ministries and commissions jointly issued the “on the issuance of the green building to create action program” notice, clear by 2022, the year the proportion of green building area in new buildings in cities and towns to reach 70 percent. 2022 In May, the Development and Reform Commission and the Energy Bureau jointly issued the Implementation Program on Promoting the High-Quality Development of New Energy in the New Era, and by 2025, the rooftop photovoltaic coverage rate of new buildings in public institutions will strive to reach 50%.

At present, the technical route to realize green PV buildings is mainly divided into two categories: traditional BAPV (Building Attached Photovoltaic) and emerging BIPV (Building Integrated Photovoltaic).BIPV, as a new solution for PV buildings, possesses advantages in various fields and will gradually replace BAPV in the market in the future. BIPV, as a new solution for PV buildings, has advantages in various fields and will gradually replace the market of BAPV. BIPV has a wider use of space from the perspective of the combination with the building; BAPV is mainly used in the transformation of unused space of the building, and the ordinary PV modules are fixed on the color steel tile or cement roof through the bracket, etc. In addition to the roof, BIPV can be used as a PV curtain wall, PV shading, PV greenhouse, and so on, which has many more application scenarios. Taking the roof as an example, BIPV is to make components into building materials, PV panels that is, roof panels, in addition to power generation outside both structural functions. BAPV, on the other hand, hangs the modules on top of the existing building materials and needs to utilize the existing roof structure. Compared to BAPV (rear-mounted photovoltaic array, which uses special brackets to fix the photovoltaic modules to the roof or wall structure of an existing building, and does not have the role of building materials and architectural aesthetics), BIPV has a number of significant technological advantages, and it is ahead of BAPV in terms of architectural appearance, design life, roof stress, waterproofing reliability, and construction difficulty and speed, among others.