China Expandable Container House | Modular Home Suppliers | Folding Expandable House Factory Solutions
Key Structural Highlights
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Hot-Dip Galvanized Steel
Q235B grade main frame with industrial-strength galvanizing for long-term corrosion resistance.
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High-Performance Insulation
75mm exterior sandwich panels with 40 kg/m³ core density for superior thermal and acoustic performance.
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Certified Electrical System
2P 63A main breaker with UL / CE / SAA compliant wiring and Three-proof LED lighting throughout.
Full Technical Specifications
| Category | Component | Technical Details & Material Specifications |
|---|---|---|
| Structure | Main Frame | High-strength Q235B Galvanized Steel (Hot-dip treated) |
| Main Beam | 80 × 100 × 2.5 mm Galvanized Square Tube | |
| Vertical Column | 150 × 150 × 2.0 mm Galvanized Square Tube | |
| Sub-frame | 40 × 60 × 2.5 mm Galvanized Square Tube | |
| Hardware | 4mm Galvanized Lifting Lugs & Reinforced Industrial Hinges | |
| Insulation | Exterior Walls | 75mm Sandwich Panel (Dual-sided 0.426mm color-coated steel) |
| Roof & Partitions | 50mm Sandwich Panel (Dual-sided 0.426mm color-coated steel) | |
| Core Density | Standard high-performance insulation: 40kg/m³ | |
| Internal Wall | 15mm Decorative Metal Sheet + 9mm Anti-collision Strips | |
| Flooring | Main Floor | 15mm Cement Fiber Board (Fireproof & Moisture-resistant) |
| Lateral Floor | 18mm Industrial Grade Construction Form-work | |
| Electrical | System Switch | High-standard 2P 63A Main Circuit Breaker |
| Lighting | 6x High-efficiency Three-proof LED Ceiling Lights | |
| Compliance | Sockets and wiring customizable to UL / CE / SAA standards | |
| Bespoke Customization Solutions | ||
| Layout Custom | 100% Flexible Layout: Our engineering team can modify internal partitions, door positions, and window placements based on your specific floor plans and drawings. | |
| Dimensions | Adjustable Sizes: Beyond standard 20ft/40ft models, custom lengths, widths, and heights are available to match your project requirements. | |
| Surface Finish | Optional Aesthetics: Multiple exterior colors (RAL System) and textures (Wood Grain, Marble, or Industrial Metal) are available. | |
Frequently Asked Questions
Q
What steel grade is used for the main frame, and why does it matter?
The main frame is built from Q235B Galvanized Steel that has undergone hot-dip galvanizing treatment. Q235B is a widely recognized structural steel grade offering excellent weldability and tensile strength. The hot-dip process creates a thick zinc coating that provides long-lasting corrosion protection — critical for outdoor or harsh-environment deployments.
Q
What is the difference between the 75mm and 50mm sandwich panels?
Both panels use dual-sided 0.426mm color-coated steel with a 40 kg/m³ insulation core. The 75mm panels are used on exterior walls where greater thermal insulation and structural rigidity are required. The 50mm panels are applied to roofs and internal partitions, offering a lighter-weight solution while still meeting insulation and fire-resistance standards.
Q
Can the electrical system be adapted for different countries and standards?
Yes. The electrical system is designed with international compliance in mind. All sockets, wiring configurations, and outlet types can be customized to meet UL (North America), CE (Europe), or SAA (Australia) standards. Please specify your target market or country when placing your order so our engineering team can configure the system accordingly.
Q
Are custom sizes available beyond the standard 20ft and 40ft models?
Absolutely. While the standard 20ft and 40ft container office sizes are the most common, our engineering team can accommodate fully custom dimensions — including non-standard lengths, widths, and ceiling heights. Simply provide your project drawings or dimensional requirements and we will develop a tailored solution.
Q
What exterior finish and color options are available?
The exterior surface finish can be selected from a wide range of options using the RAL color system for precise color matching. In addition to solid colors, decorative textures such as Wood Grain, Marble, and Industrial Metal finishes are available, allowing the unit to blend with various architectural environments or branding requirements.
Q
Is the flooring fireproof and moisture-resistant?
Yes. The main floor uses 15mm Cement Fiber Board, which is specifically engineered to be both fireproof and moisture-resistant — making it suitable for demanding site conditions including high-humidity environments. The lateral floor layer uses 18mm Industrial Grade Construction Formwork to provide additional structural load-bearing support.