Prefabricated Modular Housing Production

Prefabricated modular housing production is the process of manufacturing building components through industrial methods and assembling them into complete buildings on-site, covering six core aspects: production mode, technical system, process, quality control, industrial support, and application advantages.

1. Production Mode
It adopts modular and component-based design, breaking down buildings into independent units such as beams, slabs, walls, and columns, which are manufactured in factories via assembly lines. For example, ceilings, floors, and plumbing in modular buildings are prefabricated in factories and assembled using welding robots and automated equipment. Some projects integrate intelligent production lines and vertical warehouses to achieve parallel operations, reducing construction periods by over 60%.

2. Technical System
It primarily falls into two categories: prefabricated concrete structures and steel structures, including panel-based, box-based, and frame-based systems. For instance, the Nanjing Jindi Yufang project uses a prestressed prefabricated concrete integrated frame structure system, while the Shenzhen affordable housing project employs a prefabricated shear wall system involving prefabricated exterior wall panels, composite slabs, and composite beams, enabling efficient assembly through standardized design.

3. Production Process
Taking a high-seismic-resistance prefabricated column as an example, the process includes fixing column head plugs, cutting steel bars, welding column head connection units, securing with high-strength bolts, installing central connectors, and assembling steel components by binding steel bars. During production, the position of steel bars must be precisely located (with an error margin controlled within millimeters), and data sharing across design, production, transportation, and construction is achieved through BIM information platforms to ensure coordination among all stages.

4. Quality Control
Each prefabricated component is labeled with project name, product model, production date, and other information. Special packaging is used during transportation to protect finished products and manage their order. Before entering the site, components must pass inspections. For example, the Shenzhen project uses steel bar positioning inspection tools to verify the verticality of reserved steel bars and employs dry hard cement mortar grouting material to seal gaps, ensuring structural safety and tightness.

5. Industrial Support
It relies on the coordinated development of technical systems, production systems, and industrial clusters. For example, the CSCEC HaiLong Intelligent Construction Industrial Park in Shenzhen, Guangdong, delivers 20,000 to 30,000 modules annually, requiring highly automated equipment and refined design to form large-scale production capacity and support large-scale project demands.

6. Application Advantages
Compared to traditional buildings, prefabricated modular housing significantly shortens construction periods (e.g., the Shenzhen affordable housing project reduced its duration from 2.5-3 years to 1 year), offers high quality controllability, reduces construction waste by over 70%, and decreases on-site labor by about 50%. Additionally, Chinese prefabricated houses have been exported overseas, with a 38.1% year-on-year increase in the export of movable houses from the Guangzhou Customs area in the first four months of 2026, highlighting their market competitiveness.