Zhitong Finance APP learned that on the afternoon of August 2, Zhongjian Steel Structure Co., Ltd., a subsidiary of China Construction Group (hereinafter referred to as China Construction Steel Structure) and CIMC Group (02039), a wholly-owned subsidiary of CIMC Modular Construction Investment Co., Ltd. (referred to as CIMC modular) signed a strategic cooperation agreement. The two parties agreed to leverage their respective technologies and resource advantages through collaboration and complement each other to jointly promote the development of integrated steel structure integrated buildings in China and overseas.
China Construction Steel is the largest steel structure enterprise in China. CIMC Modular is the world's leading integrated steel structure integrated construction company. The strategic cooperation between the two companies is of great significance to promote the development of steel structure assembly buildings.
Ma Yijun, general manager of China Construction Steel, said, “China Construction Steel has always hoped to increase the degree of productization and integration of domestic and foreign buildings. It should have been done in the middle and assembled. Industrial assembly buildings must be the future trend. I hope that specific projects will be launched as soon as possible."
Modular steel structure construction market is huge
Zhitong Finance APP learned that steel structure is one of the prefabricated construction methods, and the prefabricated building is the country's most promoted residential industrialization direction. Prefabricated buildings refer to the types of buildings that are prefabricated in the factory by industrial production, such as frames, façades, stairs, balconies, etc., which are then transported to the construction site and mechanically spliced. According to the structural system, it is generally divided into precast concrete structure, steel structure, wood structure and so on.
According to professional analysis, compared with traditional architectural methods and other fabricated buildings, steel-structured buildings have many advantages, such as uniform material, high hardness and compressive strength, high toughness and plasticity, high density, and the same weight and strength requirements. In this case, the steel has a lighter weight and is easier to process in the factory. It is the most industrially produced structure and is more convenient to transport and assemble.
According to Xiao Wei, deputy general manager of CIMC Modular, the main component used in CIMC modular buildings is the overall steel structure. The factory pre-installation ratio can be as high as 80%-90%, which is the most prefabricated architectural form. The average assembly building industry average is about 25%. According to the data of CIMC's modularization, the current foreign orders undertaken by CIMC are basically all fine decoration + kitchen and bathroom equipment + indoor appliances, a full set of furniture, and even wall decoration paintings, interior decoration parts, etc., except for the operation management unit. The sheets and curtains provided are fully sturdy and are highly integrated building products. CIMC Modular Hotels and Apartments require more than 500 external manufacturers, involving more than 80 suppliers and more than 120 categories of product certification standards.
Liu Xiaokui, executive deputy general manager of CIMC Modularity, said that in developed countries, the proportion of steel structures is generally above 60%, and in some countries even as high as 80%, but in China it is very low. According to public data, domestic steel structures are generally used in high-rise buildings and public facilities buildings for commercial offices, while in the residential category, the proportion of steel structures is less than 5%.
It is understood that due to the clear standards and mature market, the main market of CIMC's modularization is overseas, and the high prefabrication rate of CIMC's modular CIMC can minimize its artificial construction site on the overseas. Dependence, in the future, I hope that the strength of both parties will be promoted to the hot demand areas such as the Belt and Road countries. In China, based on the current gap with the international market, the two sides believe that with the gradual decline of China's demographic dividend, the improvement of building standards, the promotion of policies and the increase of market acceptance, the market potential of steel structured assembly buildings is huge.
Prefabricated buildings are favored by national and local policies
With the transformation of China's economic structure, the traditional construction mode of high consumption, high pollution and low efficiency will gradually transition to the direction of building industrialization, and the prefabricated building will become one of the main carriers. This trend is not only a trend in the industry, but also driven by top-down policies. As one of the main categories, steel construction will benefit to a large extent.
The prefabricated building planning has been intensively introduced since 2015. In November 2015, the Ministry of Housing and Urban-Rural Development issued the “Outline for the Modernization of the Construction Industryâ€. It is planned that by 2020, the proportion of prefabricated buildings will account for more than 20% of new buildings, and by 2025, the prefabricated buildings will occupy new The proportion of buildings is more than 50%; in February 2016, the State Council issued the "Guiding Opinions on Vigorously Developing Prefabricated Buildings", which requires the development of prefabricated buildings according to local conditions, and strives to make the prefabricated buildings occupy the newly built building area in about 10 years. The proportion reached 30%; on September 27, 2016, the State Council issued the "Guiding Opinions of the General Office of the State Council on the Development of Prefabricated Buildings", which will focus on the development of the prefabricated areas of fabricated buildings and steel structures, and the proportion of future fabricated buildings to new construction targets. The key development cities have been clarified.
Both China Construction Steel and CIMC Modular Headquarters are located in Guangdong, and the prefabricated buildings in Guangdong and Shenzhen are more active in policy promotion and landing details. Taking Shenzhen as an example, as China's first comprehensive pilot city for residential industrialization, Shenzhen upgraded the prefabricated building to the strategic height of building an innovative city, and continued to explore “Assembled Building + Green Building + EPC (Engineering General Contract) + BIM ( "Building Information Model""'s four-in-one promotion mode, and strive to create a "Shenzhen model" that comprehensively promotes fabricated buildings. In June 2016, Shenzhen City issued the “Notice of Shenzhen Housing and Construction Bureau on Accelerating the Construction of Prefabricated Buildingsâ€, clearly defining the public construction projects of schools, hospitals, nursing homes, etc. invested by the government, as well as the business center area and Pingshan Center of Shenzhen North Station. Priority areas such as districts, Baoan Central District, and International Low Carbon City will be given priority in the implementation of prefabricated buildings. The higher the precast rate, the higher the grade of green building selected by the building. The “prefabricated construction project with a prefabrication rate of 40% and an assembly rate of 60% or more will be upgraded to a grade based on the evaluation level of green buildings in Shenzhenâ€. .
According to public information, in Shenzhen's planning, in 2020, Shenzhen's prefabricated buildings will account for 30% of the total new construction in the city, higher than the national standard. As of the third quarter of 2016, 505 projects in Shenzhen have passed the green building evaluation mark, with a construction area of ​​46.18 million square meters. Shenzhen has become the domestic green building construction scale, the construction density is the largest, and the green building evaluation logo project and the green building innovation award. One of the largest cities. Green buildings have achieved full coverage and are moving towards higher star standards, and prefabricated buildings have been fully promoted.
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