The cost of steel structure has dropped, and the market scale of assembled steel structure will reac

According to the structural system of assembly building, it can be divided into prefabricated concrete structure, steel structure and wood structure. Compared with prefabricated concrete and wood structure, steel structure has comparative advantages in many aspects, and is expected to become the mainstream structure of assembly building in the future.

The advantage of steel structure in assembly building is obvious

From the construction and installation point of view, steel structure construction cycle is short, light weight, and steel strength is high, can adopt large bay layout, compared with traditional structure can increase the use area rate by 5% - 8%.

From the point of view of application scope, it is not only suitable for housing and commercial buildings, but also for infrastructure construction of public facilities. Its plasticity and toughness can be used for high-rise and long-span structures, and its application scope is wider.

From the point of view of performance characteristics, steel structure building has high seismic strength (grade 6-9), and high-strength spiral assembly system joints make its waterproof performance better than precast concrete, the overall performance is better.

From the point of view of energy saving and environmental protection, steel structural building materials can be recycled after being removed, which is more green and environmental protection.

With the housing industry becoming a new growth point of China's economic development, housing industrialization will be the only way for the development of housing industry. The premise of housing industrialization is to have new technology, new material and new system matching with industry. Because steel structure housing is easy to realize industrialized production and standardized production, and the wall materials matched with it can adopt new energy-saving and environmental protection materials, the study of steel structure housing complete set technology will greatly promote the rapid development of housing industrialization.

Steel structure cost reduced to ordinary residential level

With the gradual reduction of construction cost and technological progress of steel residential buildings, the cost of steel residential buildings has been basically the same as that of ordinary buildings. According to the data of 2013, the total cost of civil construction and installation is 2216 yuan/m, which is only higher than 147.12 yuan/m of ordinary residential buildings. Previously, the labor cost is lower due to the demographic dividend in China, but with the change of population structure in China, The demographic dividend has gradually disappeared, the cost of manpower has continued to rise, and the cost of steel housing with lower demand for manpower and higher industrialization has basically been equal to that of traditional concrete.

The scale of assembled steel structure is expected to reach 3 trillion yuan in 2025

At present, assembly building accounts for only about 3% of the new building area in China, of which steel structure accounts for less than 1%. There is a huge incremental space for the target of "making the proportion of assembly building to 30% in about 10 years". With the continuous advancement of central and local governments at the policy level, the permeability of assembly building in China is accelerating.

According to the requirements of the "Thirteenth Five-Year Plan of Action for Assembled Buildings", "Assembled Buildings account for more than 15% of the new building area in 2020", and assuming that steel structure accounts for half of the assembling buildings, i.e. 7% of the calculation, the area of assembling steel structure is expected to reach 380 million square meters in 2020, estimated at 2216 yuan per square meter, and the market size. It will exceed 800 billion yuan.

In addition, according to the general requirements of the policy, the proportion of "assembled building will account for 30% of the new building area and 15% of the assembled steel structure" in the next ten years. It is predicted that the new residential area will increase by 3% annually. In the 10-year cycle, the market scale of the assembled steel structure will reach 2025 based on the average price of the existing assembled building. 2 trillion yuan.

Estimation of the market capacity of China's assembled steel structure in the next 10 years (unit: 100 million square meters,%, 10,000 square meters, $100 million)

_The above data and analysis are all from the 2007-2022 China Steel Structural Parts Industry Market Foresight and Investment Planning Analysis Report issued by Prospective Industry Research Institute.