Light Steel Prefabricated Housing Finished Product
The light steel prefabricated housing finished product is a modular residential product that adopts a light steel structural system, with components prefabricated in factories and rapidly assembled on-site, featuring short construction periods and environmental protection and energy efficiency. The following provides an introduction from three aspects: production enterprises, construction processes, and material selection.
I. Production Enterprises and Product Types
Currently, enterprises providing light steel prefabricated housing finished products on the market mainly fall into two categories: One type consists of manufacturers focusing on modular building systems, such as Guangdong Guose Modular Building Co., Ltd. Their products are mainly customized light steel villas, achieving rapid housing construction through modular steel structure design and adopting a factory-direct sales model to reduce intermediate costs. The other type is comprehensive prefabricated building enterprises, such as Shenzhen Shenhui Light Steel Housing Co., Ltd., whose business scope covers steel structure houses, movable board houses, integrated houses, etc. Their products offer higher flexibility and can meet the different needs of temporary buildings or permanent residences. Both types of enterprises use an industrial production model, prefabricating components such as walls, floors, and roofs in factories, with only assembly and connection required on-site, significantly shortening the construction period.
II. Standardized Construction Process
On-site construction of light steel prefabricated houses must follow strict procedures: First, foundation treatment is carried out, including line marking and positioning, laying a moisture-proof layer and floor joists, and ensuring structural stability through chemical anchor bolt fixation. Subsequently, the main structural construction is completed in sequence, including wall installation, floor construction, and roof frame erection. After the main structure is enclosed, OSB boards are nailed onto the exterior wall surface as structural linings, and a waterproof and breathable membrane is laid to form a moisture-proof barrier. For the roof, asphalt waterproofing membranes are applied to achieve double waterproofing protection. Finally, thermal-break aluminum doors and windows are installed, and interior and exterior decorations are completed. The entire process achieves seamless connection of various links through modular design. For example, wall components can be pre-integrated with electrical pipelines, reducing on-site slotting operations and further improving construction efficiency.
III. Key Material Selection
Material performance directly affects the durability and comfort of the house: Exterior walls generally use aluminum-zinc alloy metal carved panels, which take aluminum-zinc alloy steel plates as the base material, form a corrosion-resistant coating through high-voltage electrostatic spraying on the surface, and are filled with polyurethane insulation layers in the middle, offering fire resistance, moisture resistance, and thermal insulation functions, with a service life of over 20 years. The door and window system selects thermal-break aluminum materials, which block the cold and heat conduction of aluminum profiles through thermal insulation strips and, combined with insulated glass structures, can effectively reduce energy consumption by 30%-50%. The main structural body adopts high-strength galvanized light steel keels with a yield strength of 345MPa, combined with bolt connection node designs, capable of withstanding earthquakes of magnitude 8 and typhoons of magnitude 12. The material selection complies with the requirements of the 'Technical Specification for Low-rise Cold-formed Thin-walled Steel Houses', ensuring structural safety and environmental adaptability.
