Prefabricated Components in Building Construction

Prefabricated components are mainly used in prefabricated buildings in housing construction. Through industrial production of components and on-site assembly, they cover a variety of technical systems and application models, offering advantages such as high efficiency, environmental protection, and standardization, and promoting the global development of the construction industry.

Technical Systems and Core Components

Prefabricated buildings adopt prefabricated concrete structures and steel structures, with core prefabricated components including beams, slabs, walls, and columns. For example, the Nanjing Jindi Yufang project applied the prestressed prefabricated concrete assembled integral frame structural system, achieving efficient assembly through standardized components. Component production requires controlling errors to millimeter-level precision, relying on automated production lines (such as welding manipulators and highly automated assembly platforms) and parallel operation modes to ensure production efficiency and quality. The China Construction Hailong Intelligent Construction Industrial Park delivers 20,000 - 30,000 modules annually, demonstrating the large-scale capacity of industrial production.

Typical Application Models

1. Panel-based Prefabrication: Focusing on prefabricated wall panels and floor slabs, it can expand indoor usable area but has limited design flexibility, suitable for standardized residential projects.
2. Box-based Prefabrication: By combining prefabricated independent room modules (including basic decoration), construction speed increases by 50% - 70%. However, it has high requirements for transportation and lifting equipment and is often used in temporary buildings or rapid delivery projects.
3. Modular Construction: With the highest level of integration, modules include ceilings, floors, and water and electricity pipelines. All processes are completed in the factory before on-site assembly. For example, the public housing project in Shenzhen, Guangdong, was assembled from 6,028 concrete modules, reducing the construction period from 2.5 - 3 years to 1 year, a reduction of more than 60% in the construction cycle.

Advantages and Market Performance

1. Efficiency and Environmental Protection: It reduces on-site noise, dust, and construction waste (e.g., waste reduction of more than 70% in the Fujian industrial base), aligning with the trend of green buildings.
2. Growing Global Demand: China's exports of prefabricated houses have been significant. In the first four months of 2026, the Guangzhou Customs area exported 1.4 billion yuan worth of mobile houses (a year-on-year increase of 38.1%), and the Shenzhen port exported goods worth 1.68 billion yuan (a year-on-year increase of 19.6%), with products covering more than 150 countries and regions.
3. Expanded Application Scenarios: In addition to residential buildings, modular construction is widely used in hotels, senior living apartments, data centers, and other fields. For example, CIMC in Jiangmen has delivered more than 1,000 megawatts of data center modules, demonstrating its adaptability in industrial buildings.

Prefabricated buildings, through the combination of industrialization and on-site assembly, are driving the transformation of housing construction towards high efficiency, environmental protection, and standardization, and occupying an important position in the global market.