Heavy Steel Container House Production

The production of heavy-steel container houses requires the integration of steel frame design, enclosure panel selection, modular process optimization, and localized adaptability improvements. Its core process covers four main stages: material selection, structural processing, functional integration, and on-site installation.

1. Steel Frame Design

Heavy-steel container houses are constructed using high-strength steel (such as hot-dip galvanized cold-formed steel) for the frame. The thickness and load-bearing structure of the steel must be determined based on the intended use. For example, if 4mm square steel is used for the bottom columns, stacking two layers may cause deformation due to localized pressure, necessitating an upgrade to 6mm square steel with added reinforcing ribs to increase compressive strength by approximately 50%. Frame welding requires the use of CNC bending machines to control precision, ensuring that the bending angle error of the door frame is within ±0.5 degrees to prevent dust infiltration through gaps during sandy weather. For corrosion protection in northwest regions, shot blasting followed by the application of zinc-rich primer and polyurethane topcoat is necessary to create an effective protective system lasting over 15 years.

2. Enclosure Panel Selection

Panels must balance thermal insulation, fire resistance, and moisture resistance. For example, in the Jining area of Inner Mongolia, where winter temperatures can drop to -30°C, 100mm rock wool sandwich panels paired with 0.8mm corrugated steel sheets are required to meet basic insulation needs. To address condensation issues caused by temperature differentials exceeding 20°C, the inner layer of the panels should include a moisture-resistant aluminum foil layer, while the outer layer should use a high-weather-resistant polyester resin coating to reduce the likelihood of condensation. The fire rating must meet or exceed the national B1 standard to prevent the spread of fire from flammable materials.

3. Modular Process Optimization

1. Integrated Plumbing and Electrical Systems: Pre-embedded pipelines are integrated into the chassis of the container, with quick-connect fittings used to reduce on-site trenching and minimize installation errors.
2. Structural Mechanics Improvements: By adding C-shaped steel purlins to distribute loads, the issue of insufficient stiffness in traditional container floors is resolved, allowing for three-layer stacking.
3. Transport Efficiency Enhancement: Foldable containers can be compressed to 1/5 of their expanded volume when folded, increasing single-trip transport capacity by 60% and reducing logistics costs.

4. On-Site Installation and Commissioning

1. Ground Preparation: After removing loose soil, the original soil layer is compacted. For long-term use, a 30-50cm wide concrete strip foundation is poured, with a horizontal error controlled within 5mm.
2. Lifting and Positioning: Synchronous load-bearing steel cables are used to ensure even load distribution across all lifting points, preventing container distortion. After positioning, a spirit level is used to check the horizontal alignment of the bottom beam, with an error tolerance of ≤2mm per meter.
3. Joint Sealing: EPDM rubber sealing strips and uniform adhesive application are used to ensure airtightness and prevent sand infiltration.