Container House Keel Materials
The keel materials of container houses are mainly steel, with common types including light steel keels, hot-dip galvanized cold-formed steel sections, and ordinary channel/angle steels. In some scenarios, aluminum alloy keels may be used.
1. Light Steel Keels
Light steel keels are one of the core materials for the keels of container houses. Made from continuously hot-dip galvanized steel strips and formed through cold rolling processes, they possess characteristics such as high strength, light weight, moisture resistance, and fire resistance. Their cross-sectional shapes are diverse (e.g., V-shaped, C-shaped, U-shaped), allowing them to meet different structural requirements. For example, packing-box container houses often use hot-dip galvanized cold-formed steel sections as frames, paired with fire-resistant polyurethane sandwich panels, ensuring both structural stability and thermal insulation. The installation of light steel keels does not require welding; they are fixed using standard connectors, making construction convenient and environmentally friendly, suitable for multi-story stacked scenarios (e.g., construction site dormitories, temporary office areas).
2. Ordinary Steels (Channel Steels, Angle Steels)
Traditional container house keel structures often employ ordinary steels such as channel steels and angle steels. These materials offer high strength and corrosion resistance, capable of bearing significant loads and ensuring overall structural stability. For instance, the columns of container houses typically use channel steels with a thickness of no less than 1mm, which are pressed into standardized components using equipment and form a skeletal support system together with other channel steels. The steel surfaces are generally galvanized to enhance rust resistance and extend service life.
3. Aluminum Alloy Keels
In scenarios with high requirements for weight and corrosion resistance, aluminum alloy keels may be adopted. Aluminum alloy keels are formed through rolling or extrusion of aluminum profiles, with a lower density than steel. Their natural oxide film on the surface provides stable corrosion resistance. Despite their higher unit price, their characteristics of light weight, high strength, and ease of processing make them the preferred material for door and window frames or decorative structures. For example, the door and window systems of container houses may use aluminum alloy keels to balance aesthetics and durability.
