Prefabricated Building Components Production

Prefabricated building components production is an efficient construction method that involves manufacturing building components in a factory through a modular approach and then transporting them to the site for assembly. The core processes and technical characteristics are as follows:

1. Modular Production Model
Prefabricated building components are produced on factory assembly lines, where ceiling, wall, floor, plumbing, and electrical components are disassembled into independent modules. Parallel operations are used to shorten the production cycle. For example, the China State Construction Hailong Intelligent Construction Industrial Park in Shenzhen, Guangdong, utilizes a vertical factory and automated production lines, achieving an annual delivery capacity of 20,000 to 30,000 modules and reducing construction time by over 60% compared to traditional buildings. This model achieves large-scale and efficient building production through standardized design, industrial manufacturing, and prefabricated construction.

2. Technical Systems and Component Types
Prefabricated components cover core structural elements such as beams, slabs, walls, and columns, with technical systems divided into two main categories: prefabricated concrete structures and steel structures. Specific types include:

• Panel-based Prefabrication: Using prefabricated wall panels and floor slabs as the core, assembled with connectors;
• Box-based Prefabrication: Prefabricating functional units such as bathrooms and kitchens into independent "boxes," increasing construction speed by 50%-70%;
• Frame-based Prefabrication: Using prefabricated beams and columns as the skeleton, with on-site casting of joints to form an integrated structure.
  Different technical systems are suitable for various scenarios, with box-based prefabrication often used in projects with high standardization requirements, such as hotels and dormitories.

3. Quality Control and Precision Requirements
The production process places strict controls on errors, with steel bar positioning accuracy measured in millimeters and module joint gaps required to be within ±2mm. Each module is assigned a unique "ID card" that records project name, model, production date, and other information, enabling full lifecycle traceability. Additionally, the controlled factory environment avoids weather-related construction delays, ensuring stable component quality.

4. Industrial Support and Policy Support
Modular construction relies on support from technical systems, production systems, and industrial clusters. For example, Fujian Province has established industrial bases through policy guidance, reducing construction waste by over 70%. Guangdong Province has issued a special plan setting a target of over 35% prefabricated building share by 2025. Policy support and industrial chain collaboration provide technical, talent, and market guarantees for prefabricated component production.

5. Application Scenarios and Efficiency Advantages
Prefabricated components are widely used in high-end office buildings, hotels, schools, data centers, and other scenarios. For example, in a Shenzhen affordable housing project, 6,028 concrete modules were assembled into five nearly 100-meter residential buildings, reducing the completion time from 2.5-3 years to 1 year and cutting on-site labor by about 50%. Additionally, modular construction reduces scaffolding use by over 80%, lowering safety risks and costs.

6. Export and Market Expansion
China's exports of prefabricated housing have grown significantly, with Guangzhou Customs reporting RMB 1.4 billion in activity housing exports in the first four months of 2026, a 38.1% year-on-year increase. Companies such as Guangdong CIMC Construction Manufacturing Co., Ltd. have products covering over 20 countries and regions, with deliveries reaching RMB 59.772 million in the first half of 2024, demonstrating international market recognition of China's prefabricated component technology.