What Are the Raw Materials for Container Houses
The raw materials for container houses mainly include steel, enclosure panels, aluminum alloy, glass, and plastics, among others. Different components use different materials to meet requirements for structural strength, functionality, and durability.
1. Steel: The Core Material for Structural Support
The main frame of container houses uses high-strength steel, such as Q355B-grade weathering steel, which has a yield strength approximately 30% higher than that of ordinary carbon steel. It forms a self-balancing system through rigid connections between corner fittings and side beams, reducing the need for additional reinforcement. For example, the longitudinal corrugated panels on the top of the container disperse stress through their corrugated geometry, preventing local buckling. Additionally, channel steel and angle steel are used to weld the main crossbeams around the top and bottom edges, ensuring structural stability. The corrosion resistance of steel is enhanced through coating processes, such as adding nano-silica particles to the topcoat, which achieves a hardness of 3H, resisting wind and sand erosion. In salt spray tests, no red rust appeared after 1000 hours, supporting a 25-year service life for the container.
2. Enclosure Panels: Composite Construction Enhances Thermal Performance
The enclosure structure adopts a three-layer composite construction of "rock wool-air layer-aluminum-zinc coated steel plate." The rock wool layer, with a thickness of 75-100 millimeters, has fibers arranged perpendicular to the heat flow path, with a thermal conductivity below 0.040 W/(m·K). The 5-millimeter air layer in the middle suppresses convective heat transfer, resulting in an overall heat transfer coefficient (U-value) below 0.5 W/(m²·K), effectively reducing condensation risks in low-temperature environments during winter in Inner Mongolia. Some suppliers use a combination of 100-millimeter rock wool sandwich panels and 0.8-millimeter corrugated steel plates to meet basic insulation requirements in environments as cold as -30 degrees Celsius.
3. Aluminum Alloy and Glass: Functional and Comfort Enhancements
Aluminum alloy is used for window and door frames, offering advantages such as light weight, corrosion resistance, and thermal insulation, enhancing the comfort of the house. Glass is primarily used for windows and observation windows, providing high transparency and corrosion resistance, improving lighting and visibility.
4. Plastic Products: Applications of Auxiliary Materials
Plastic pipes, plastic sheets, and other materials are used for water and electricity pipelines, interior components, etc. They are lightweight, easy to process, and cost-effective, meeting various functional requirements. For example, pre-embedded pipelines are integrated into the container chassis, using quick-connect designs to reduce on-site construction errors.
