Prefabricated Building

Prefabricated buildings are a form of construction that involves the industrial production of building components and their assembly on-site, featuring various types, technical coverage, construction processes, advantages, as well as development history and market conditions.

Main Types Prefabricated buildings can be classified into panel-type, box-type, and frame-type based on assembly methods. Panel-type prefabrication focuses on prefabricated wall panels and floor slabs, allowing for expanded usable area but limited design flexibility. Box-type prefabrication combines prefabricated functional units, increasing construction speed by 50%-70%, but requiring higher transportation and lifting equipment. Modular construction represents a higher level of integration, breaking down buildings into independent modules that are manufactured in factories and assembled on-site. Based on structural form, they can be categorized into steel, concrete, and wooden types. Chinese companies hold comparative advantages in steel and concrete sectors, with steel structures being lightweight and suitable for overseas transportation and high-rise buildings, while concrete structures offer a more traditional living experience.

Technical Coverage and Construction Process The technology covers prefabricated concrete structures and steel structures, with components including prefabricated beams, slabs, walls, and columns. Taking modular construction as an example, the construction process involves completing integrated prefabrication and acceptance of modules for architecture, structure, electromechanical systems, and decoration in factories, followed by transportation to the site for assembly and immediate use. For instance, the CSCEC Hailong Intelligent Construction Industrial Park in Shenzhen, Guangdong, achieves efficient production through welding robots and highly automated assembly.

Advantages

1. Reduced Construction Time: Modular construction reduces the construction period by over 60% compared to traditional buildings, while prefabricated construction reduces it by 30%.
2. Pollution Reduction: Parallel operations in factories and intelligent production lines significantly reduce on-site noise, dust, and construction waste, with regions like Fujian achieving over 70% reduction in construction waste.
3. Quality Control: Each component has a detailed 'ID card,' with error control measured in millimeters.
4. Energy Efficiency and Environmental Protection: Short construction periods and strong adaptability make them popular both domestically and abroad.
5. Ease of Maintenance: Modular design facilitates later maintenance and upgrades.

Development History and Market Conditions China's prefabricated concrete technology originated in the 1950s and experienced a resurgence in the 21st century due to production efficiency and environmental advantages. Chinese-made prefabricated buildings are selling well overseas, with Guangzhou Customs reporting RMB 1.4 billion in exports of mobile homes in the first four months of 2026, a 38.1% year-on-year increase; Shenzhen Port reported RMB 1.68 billion in exports, a 19.6% year-on-year increase. It is predicted that the global modular construction market will exceed USD 142.8 billion by 2030.