Factory Building Prefabrication
Factory building prefabrication is a construction method that involves the industrial production of building components, which are then assembled on-site, also known as prefabricated modular construction.
Main Types and Technologies
Factory building prefabrication encompasses various types and technological systems. In terms of types, it includes panel-based, box-based, and frame-based prefabrication, each suitable for different construction needs. The technological systems primarily consist of prefabricated concrete structures and steel structures, with components such as beams, slabs, walls, and columns being prefabricated products, enabling modular production of building structures.
Factory Production Model
Modern factories enhance efficiency through intelligent production lines. For example, the CSCEC Steel Structure Modular Intelligent Factory employs the country's first steel structure modular intelligent production line, dividing a house into six faces, producing them in parallel on six sub-lines, and finally assembling them into a complete box at the end, with a daily production capacity of 50 units and precision controlled within 1-2 millimeters. The Shenzhen Longgang CSCEC Hailong Intelligent Construction Industrial Park has established the world's first concrete MiC (Modular Integrated Construction) flexible intelligent manufacturing production line, producing a fully equipped module every 20 minutes, with over 70% of the processes shifted to the factory, reducing the construction period by more than 60%.
Core Advantages
- Short Construction Period: The construction period of prefabricated buildings is 30% shorter than that of traditional methods, with some cases achieving efficient assembly such as "one wall every twelve minutes and one room every two hours."
- Energy Efficiency and Environmental Protection: Factory-based production reduces on-site construction pollution, with industrial bases supported by policies in Fujian and other regions achieving a reduction in construction waste of over 70%.
- Strong Adaptability: It covers multiple scenarios such as residential buildings, hospitals, and schools, meeting different functional requirements.
- Controllable Quality: Module manufacturing precision reaches the millimeter level, with the pass rate of protective inspections being five times higher than traditional methods. All components are equipped with globally unique digital codes for full lifecycle traceability.
Development History
Prefabricated concrete technology in China began in the 1950s, initially applied in factory and residential construction. In the 21st century, it has seen a resurgence due to its production efficiency and environmental advantages. Companies such as Vanke Group have developed prefabricated shear wall residential structural systems and promoted prefabricated frame technology. Export data reflects market expansion trends: In the first four months of 2026, enterprises in the Guangzhou Customs area exported movable houses worth 1.4 billion RMB (a year-on-year increase of 38.1%), while exports from the Shenzhen port reached 1.68 billion RMB (a year-on-year increase of 19.6%).
