Steel Structure Container House Production
The production of steel structure container houses requires control over five core aspects: material selection, structural design, enclosure systems, connection nodes, and construction installation, achieving a balance of safety, durability, and cost-effectiveness by combining engineering practices with regulatory requirements.
1. Material Selection and Structural Stability
The main frame should use high-strength steel (such as Q355B weathering steel), which has a yield strength approximately 30% higher than that of ordinary carbon steel, supporting a box structure with a length-to-width ratio close to 2:1. A self-balancing system is formed through rigid connections between corner fittings and side beams, reducing reliance on external supports. For example, Yiqi Company disperses stress through longitudinal corrugated plates on the top, avoiding local buckling and reducing material usage by 15%. Welding processes must comply with the GB/T 19001-2016 standard to ensure weld strength. For instance, Suzhou Zhongnan Steel Structure uses automatic welding, with a frame deformation of only 2mm under 12-level strong winds, well below the national standard limit of 10mm.
2. Thermal Performance of Enclosure Structures
The enclosure system should balance insulation and condensation prevention. A three-layer composite structure of "rock wool-air layer-aluminum-zinc plate" is recommended: the rock wool layer is 75-100mm thick with a thermal conductivity of ≤0.040 W/(m·K); a 5mm air layer inhibits convective heat transfer, resulting in an overall heat transfer coefficient (U-value) of <0.5 W/(m²·K). This design reduces condensation risk in winter in Inner Mongolia, extending the lifespan of the steel structure and offering greater durability than traditional foam sandwich panels.
3. Connection Nodes and Seismic Design
In seismic fortification zones (e.g., intensity 7), a dual fixation mode of "wedge lock + high-strength bolts" should be adopted. The wedge lock has a 15-degree inclined surface, providing significant self-locking under horizontal shear forces, with a displacement of ≤3mm during simulated magnitude 8 earthquakes, 40% better than welded nodes. Bolted connections facilitate secondary disassembly and reduce construction waste, aligning with circular economy trends.
4. Construction Installation and Quality Control
The installation process must strictly follow the load transfer path: roof load → side wall columns → bottom beams → ground. Welded boxes offer strong deformation resistance, suitable for frequent lifting; bolted connections require checking the wall thickness of columns and bottom beams (1.5-3mm), with thicker walls providing greater load redundancy. Construction teams must possess full-chain qualifications (e.g., design, foundation, fire protection) to avoid subcontracting issues. For example, Zhengzhou Weilan Steel Structure adheres to the ISO quality management system, standardizing operations from raw material re-inspection to weld non-destructive testing.
5. Sustainability and Compliance
Prioritize products that support multiple disassemblies and cross-border compliance, with over 60% of orders from leading manufacturers featuring low-carbon attributes. Verify production qualifications, domestic and international certifications (e.g., CE, ISO), and after-sales capabilities to reduce selection risks. For example, Zhonghui Energy Storage Container Company adopts a modular design, supporting circular use and lower overall costs.
