Prefabricated building: a building constructed from prefabricated parts assembled on the job site. In simple terms, it's like building blocks, making prefabricated parts in a factory, and then simply bringing them to the site and assembling them. According to the different material form, it can be divided into three categories: prefabricated concrete structure building, prefabricated steel structure building and prefabricated wood structure building. Today we will focus on the development and application of steel structure assembly building, for you one by one introduction.

01, steel structure building from "saving use" to "Vigorously promoting"

Since the founding of new China, China's crude steel production increased year by year, the national policy for steel structure building from "saving use" to "vigorously promote the use". Unfortunately, over the years, the architectural form has formed a pattern dominated by concrete structure, and civil engineering professionals trained in the past are also in the majority of studying concrete structure. One of the key problems that restricts the development of steel structure architecture is the shortage of steel structure architecture design talents and construction enterprises.

But the situation has taken a new turn in 2019, also known as the "first year of steel architecture". "13th Five-Year plan" prefabricated building action plan requires prefabricated buildings in 2020 in new buildings accounted for more than 15%, 2025 accounted for 30%, while China's prefabricated buildings accounted for only 9% at that time!

02, over 200 billion market, who will take the lead

On March 27, 2019, the Ministry of Housing and Urban-Rural Development announced the Main points of work of the Construction Market Supervision Department of the Ministry of Housing and Urban-Rural Development in 2019, pointing out that: to carry out the construction of steel structure prefabricated housing pilot, promote the establishment of a mature steel structure prefabricated housing construction system. Construction industry experts predict that if the proportion of prefabricated steel structures in prefabricated buildings is increased from 21% to 30% in 2020, the corresponding market space will reach nearly 250 billion yuan, with an average growth rate of 46%.

Which subjects will occupy the market space of over 200 billion steel structure industry? As mentioned above, steel structure architectural design talents are scarce, and steel structure construction enterprises are scarce, which is the key problem that restricts its development. It can be imagined that now the market has steel structure construction qualification of the enterprise units will share this hundred billion big cake! Steel structure assembly building, the most important design qualification is "steel structure engineering construction professional contracting qualification".

In terms of distribution, according to statistics, there are nearly 90,000 enterprises with professional contracting qualification of steel structure engineering in China, including 2,039 enterprises with first-class qualification of professional contracting qualification of steel structure engineering. The distribution of provinces is as shown in the figure below:

As can be seen from the chart above, jiangsu, Shandong, Fujian, Zhejiang and Henan are among the top five in terms of the number of first-class enterprises with professional contracting qualification for steel structure engineering in China. Jiangsu province has the largest number, with 250 companies, far more than any other province. Shandong and Zhejiang, among the first batch of pilot steel-structure prefabricated buildings, have 179 and 131 enterprises respectively. From the above data, we can also see that the development of steel structure assembly building in East China takes the lead (such as Jiangsu, Zhejiang and other places); South China followed suit (such as Fujian and Guangdong). In addition, by the national policy approval of steel structure assembly housing construction pilot areas, is a unique advantage (such as Shandong, Henan and other places)!

In 2019, the Ministry of Housing and Urban-Rural Development approved the pilot construction of steel prefabricated housing in zhejiang, Shandong, Sichuan, Hunan, Jiangxi, Henan and Qinghai provinces. From the perspective of enterprises, state-owned construction giants with professional qualification of steel structure engineering, such as China State Construction Engineering and Shanghai Construction Engineering, will take the lead in occupying market share based on their excellent resource allocation, team management and technological innovation strength.

03, assembly building led to architectural paint

As the development of assembly type building, industry personage thinks, to a certain extent means the decline of architectural coating demand. However, the acceleration of assembly building, waterproof, thermal insulation materials, wall materials, exterior wall brick finishes and other related industries will usher in new opportunities. Different from the requirements of traditional buildings on parts and components, assembly buildings on the air tightness of doors and Windows, thermal insulation effect and other aspects of the requirements of a new height. In addition to the continuous demand for architectural coating products, the demand for high-quality building insulation materials, insulation decorative finished boards, waterproof materials and other building materials will increase significantly. Although the requirements of prefabricated buildings on parts are strengthening, high standards indirectly eliminate backward production capacity, so that parts parts enterprises can be more competitive in the market, while bringing new development opportunities for the industry in development difficulties, is to promote the standardization of real estate, building materials industry, home decoration market. To coating industry, may also be a new breakthrough.

In the future, the prefabricated construction mode, especially the prefabricated steel structure construction mode more in line with China's national conditions, will be more and more application scenarios, including hospitals, schools, residential buildings, industrial plants, three pavilions and one center, etc. The development of steel structure assembly building will be more mature, industry acceptance will be higher and higher!