Our processes and procedures
Basic Specifications
10ft - expandable container house
4 sets in a 40 foot high container/4 sets in a 40ft Open Top Container
Product model
10 foot small（mm）
House type
Open room
Expand size
L2950×W6800×H2560/2860
Number of guests
1~2 people
Internal dimensions
L2690×W6640×H2400/2700
Electric power consumption
12KW
Folding size
L2950×W2200×H2560/2860
Total net weight
1.9T/2.3T
20ft - expandable container house
2 sets in a 40 foot high container/2 sets in a 40ft Open Top Container
Product model
20 foot small（mm）
House type
Open room
Expand size
L5900×W6800×H2560/2860
Number of guests
1~3 people
Internal dimensions
L5640×W6640×H2400/2700
Electric power consumption
12KW
Folding size
L5900×W2200×H2560/2860
Total net weight
3.65T/4.1T
30ft - expandable container house
1 sets in a 40 foot high container/1 sets in a 40ft Open Top Container
Product model
20 foot small（mm）
House type
Open room
Expand size
L9000×W6800×H2560/2860
Number of guests
1~5 people
Internal dimensions
L8640×W6640×H2400/2700
Electric power consumption
12KW
Folding size
L9000×W2200×H2560/2860
Total net weight
4.2T/5.3T
40ft - expandable container house
1 sets in a 40 foot high container/1 sets in a 40ft Open Top Container
Product model
20 foot small（mm）
House type
Open room
Expand size
L11800×W6800×H2560/2860
Number of guests
1~7 people
Internal dimensions
L11540×W6640×H2400/2700
Electric power consumption
12KW
Folding size
L11800×W2200×H2560/2860
Total net weight
5.3T/6.1T
Structural Explanation
Roofing System
The roofing system is the outermost waterproof protection structure of the container house. This system typically uses lightweight and corrosion-resistant materials such as color-coated metal sandwich corrugated panels. Proper drainage design, thermal insulation treatment, and sealing technology are critical to effectively prevent water leakage and reduce heat transfer.
Roof Steel Structure System
This system consists of steel purlins, steel beams, and bracing members that support the roof panels. Its design is based on relevant standards (e.g., Australian/…), and it can withstand dead loads, live loads, wind uplift loads, and snow loads. All steel components are hot-dip galvanized or coated with anti-corrosion paint to ensure longterm service performance.
Ceiling System
The ceiling system is the interior decorative layer beneath the roof structure. Itgenerally includes a suspended ceiling made of a rock wool sandwich panel decorative layer (carbon crystal board or bamboo wood fiber board) as well as an insulation layer.The ceiling not only enhances interior aesthetics and provides acoustic insulation but also separates the living space from the roof cavity, further improving thermal insulation performance.
Wall System
The wall system is divided into two parts: the exterior enclosure walls and the interior partition walls. Exterior walls mostly use composite panels with steel sheets on both sides and an insulation core material (EPS, rock wool, polyurethane, etc.) in the middle.Interior walls can be gypsum boards or light gauge steel stud walls. The wall system ensures structural rigidity while providing thermal insulation, acoustic insulation, and fire resistance.
Door and Window System
This system covers all exterior and interior doors, sliding windows, casement windows,and matching sealing profiles. In container houses, high performance steel or aluminum window frames with double seal structures are commonly used. The door and window system must ensure smooth opening and closing, good air tightness and water tightness, compliance with wind pressure resistance requirements, and the ability to adapt to wall deformations that occur during container expansion.
Main Steel Structure
The main steel structure forms the load bearing skeleton of the expandable container house, including columns, primary and secondary beams, and corner posts. Made of Q235 carbon structural steel, the main structure transfers all types of loads to the foundation, ensuring overall stability and safety during transportation, lifting, and occupancy. Moreover, after the main steel frame is fully welded in the factory, it receives surface anti corrosion treatment to extend the service life of the house.
Floor System
The floor system consists of the underframe (floor joists), the base panel (cement fiber board), and the finished surface layer (SPC stone plastic flooring). The floor of an expandable container house is designed with modular connections, allowing for level adjustment and uniform load distribution. A common construction practice is to lay fire resistant cement boards over the steel deck, and then install SPC flooring on top, balancing indoor comfort with durability.
Primary Structure System
Structural Notes
Main Framework Note: All primary and secondary steel structures for this expandable house utilize Q235B Carbon Structural Steel, which is widely accepted as equivalent to AS/NZS 3678 Grade 250 for Australian and international projects. The heavy-duty main beams use a thickened 4.75mm steel plate for superior strength and durability, while the rest of the framework is fabricated with 1.5mm high-strength steel tubes. The entire frame is finished with a polyester powder coating (electrostatic spraying), providing excellent corrosion resistance, weatherproofing, and long-term durability for global export.
Main Steel Structure & Materials
| Component | Material Specification | Steel Grade |
|---|---|---|
| Top Main Beam | 80×80×T4.75mm | Q235B |
| Bottom Main Beam | 80×80×T4.75mm | Q235B |
| Top Purlins | 40×60×T1.5mm | Q235B |
| Bottom Purlins | 40×60×T1.5mm | Q235B |
| Side Bottom Outer Frame | 80×80×T1.5mm | Q235B |
| Side Bottom Intermediate Purlins | 40×60×T1.5mm | Q235B |
| Side & End Wall Frame | 60×80×P1.5mm | Q235B |
| Side Roof Structure | 80×80×T1.5mm + 60×80×1.5mm P-section tube | Q235B |
| Internal Partition Frame | 50×70×T1.5mm (P-tube) | Q235B |
| Lifting Lugs | 150×170×120×T20mm | Q235B |
| Folding Hinges | 13mm Galvanized Hinges | — |
| Frame Protective Coating | Electrostatic Spraying / Polyester Powder Coating | — |
Wall Panel System
1. Load-Bearing Frame (Structural Core)
The foundation of our wall system begins with a heavy-duty, hot-dip galvanized rectangular steel tube frame made from Q235B/S235 grade steel (with options of 80x40mm, 100x50mm, or 120x60mm sections). Constructed using high-frequency welding techniques, the frame guarantees 100% structural stability and compliance with international engineering standards. With a zinc coating of ≥80g/m² (Z80), it offers superior anti-rust and anti-corrosion protection, ensuring a long service life even under extreme outdoor conditions.
2. High-Density Rock Wool Insulation Core
Sandwiched within the steel frame is a premium high-density rock wool core (standard thickness 75mm or 100mm). This layer provides exceptional thermal insulation with an R-value ranging from R-15 to R-23, significantly reducing energy consumption. Additionally, it is fire-rated to Class A1, providing superior fire protection, and delivers excellent acoustic insulation to ensure a quiet, peaceful interior environment. The rock wool is sandwiched between high-strength galvanized steel sheets, contributing to the wall’s overall structural rigidity.
3. Exterior 3D Embossed Metal Cladding
Our exterior walls are clad with 3D embossed/velvet-texture metal panels that combine high aesthetics with robust functionality. Coated with a high-grade Al-Zn alloy and anti-UV treatment (standard 0.4mm thickness), these panels are highly rust-proof, weather-resistant, and resistant to corrosion. More importantly, they feature a screw-free, quick-installation design that saves time and ensures a clean, seamless finish. The panels are available in various colors and finishes, allowing you to match your project’s architectural style effortlessly.
4. Eco-Friendly Interior Carbon Crystal Panels
The interior walls are finished with eco-friendly carbon crystal boards, made from a blend of bamboo charcoal and crystal particles (standard 8mm thickness). These panels are formaldehyde-free and moisture-proof, creating a healthy and safe living environment. They are available in matte or semi-gloss finishes, with a wide selection of textures including wood grain and marble. The quick-install design allows for a swift and clean interior fit-out, giving the final space a premium, modern look.
FLOOR SYSTEMS
1. Premium Finish Flooring
We utilize SPC Click-Lock Flooring (Stone Plastic Composite) as our standard finish flooring for living areas. With a rigid core and a thickness of 6–8mm, it offers excellent durability and dimensional stability. The flooring features a wear layer of at least 0.3mm and a slip resistance rating of ≥R9, making it safe, formaldehyde-free, moisture-proof, and easy to maintain. The click-lock joint system ensures a seamless, floating installation that is both time-efficient and aesthetically pleasing.。
2. Robust Subfloor Underlayment
Beneath the finished floor lies an 18mm high-density Compressed Fibre Cement Sheet. This subfloor is engineered to be moisture-resistant and dimensionally stable, even under temperature fluctuations. It features a precision-machined tongue-and-groove joint for superior structural integrity and is securely screw-fixed to the steel floor joists at a maximum center-to-center spacing of 300mm, ensuring a flat, solid, and noise-reducing base.
3. Bathroom & Wet Area Flooring System
For bathrooms, showers, and other wet areas, our standard flooring system is upgraded to meet strict international waterproofing standards. The flooring is fully compliant with Australian Standard AS 3740 (Waterproofing of domestic wet areas). This includes:
Waterproofing Membrane: A continuous liquid-applied waterproofing membrane beneath the finish layer, extending a minimum of 1800mm up the walls within shower enclosures to ensure zero leakage.
Slip Resistance & Drainage: The finish flooring in wet areas is upgraded to a slip resistance rating of R10 or R11 to ensure safety under wet conditions. Proper floor falls and gradients are engineered into the subfloor to guarantee efficient drainage toward floor wastes.
CEILING SYSTEMS
This premium roof and ceiling assembly is engineered for superior weather resistance, energy efficiency, and contemporary interior aesthetics. The system consists of four purpose-built layers designed to meet strict global compliance standards.
1. Durable Corrugated Roofing Sheet
The outermost layer features a 0.5mm galvanized corrugated sheet with a G90 (Z275) hot-dip zinc coating. Manufactured with a yield strength of 235 MPa, it provides exceptional resistance against corrosion, impact, and severe weather conditions. This heavy-duty roofing material ensures long-term structural protection for the dwelling.。
2. High-Performance Thermal Insulation
Directly beneath the roof sheet sits a 50mm high-density rock wool insulation layer (density: 80 kg/m³). This material offers an A1 non-combustible fire rating and a thermal conductivity of ≤0.040 W/m·K, delivering outstanding energy efficiency. It significantly reduces heat transfer in summer and minimizes heat loss in winter, creating a consistently comfortable indoor climate.
3. Structural Ceiling Substrate
Above the finished ceiling, a 10mm structural-grade OSB/3 or OSB/4 board provides a rigid, moisture-resistant substrate. This layer serves as a stable foundation for the interior decorative panels, meets formaldehyde emission class E1 or better, and aligns with international construction and safety standards.
4. Premium Decorative Ceiling Finish
The interior ceiling is finished with an 8mm Carbon Crystal Board (UV-coated high-density decorative panel). This composite material is moisture-resistant, fire-retardant, and completely safe for indoor use. Offering a clean, high-quality appearance, it perfectly matches the interior wall lining and adds a touch of modern sophistication to any room.
Door System
1. Entry Doors (Aluminum & Steel)
Entry doors are offered in two premium options: a thermally broken aluminum double glass door, or a reinforced steel security door. Both feature SS316 stainless steel hinges, commercial mortise locks, and heavy-duty closers. Compliant with AS 2047 and CE (EN 14351-1) standards.
2. Interior Aluminum-Clad Wood Doors
Interior doors are pre-finished aluminum-clad wood doors with a solid composite core. They combine the warmth of natural wood with excellent moisture resistance. Equipped with SS316 hinges, privacy latches, and modern lever handles. Manufactured to meet Australian AS 2688 and European interior door specifications.
3. Waterproof Bathroom Doors
Bathroom doors are built with a corrosion-resistant 6063-T5 aluminum frame and an integrated water-stop threshold. Glazed with 5mm frosted toughened safety glass for privacy and safety, and fitted with SS316 marine-grade hardware. Fully complies with AS 3740 (Waterproofing) and European wet-area safety requirements.
4. Global Compliance & Premium Hardware
Every door system in our expandable homes is designed for the global market. CE-certified in line with EN 14351-1, and tested to meet AS 2047, AS 1288, and AS 2688. All exposed hardware is upgraded to SS316 marine-grade stainless steel, ensuring zero corrosion, maximum durability, and flawless operation across all climates.
Window System
1. Frame Material & Finish
High-grade thermally broken 6063-T5 aluminum frames with a durable powder-coated finish. Engineered for high wind loads and long-term corrosion resistance in coastal or extreme environments.
2. High-Performance Glazing
Double-glazed Low-E toughened safety glass with argon gas fill. Ensures exceptional thermal insulation, reduces heat transfer, and provides excellent acoustic performance. Compliant with AS 1288 (Australia) and European EN glass safety standards.
3. Versatile Opening Styles & Hardware
Available in vertical awning, casement, and horizontal sliding configurations to suit different ventilation needs. All units come pre-installed with stainless steel insect screens and SS316 marine-grade stainless steel hardware for zero rust and smooth operation.
4. Global Compliance & Certifications
Manufactured to meet both Australian and European building regulations. Certified to AS 2047 (Windows and external glazed doors) and CE-compliant under EN 14351-1. A reliable, code-compliant solution for residential, resort, and commercial projects worldwide.
Water Supply & Drainage System
1. Pipe Materials & Sizing
Our plumbing system utilizes high-quality PPR (Polypropylene Random) pipes for both hot and cold water supply (sized at DN25), ensuring excellent corrosion resistance and long-term durability. For wastewater, we use robust PVC piping, with dedicated lines for greywater (DN50) and blackwater (DN100), fully compliant with international sanitary standards.
2. Factory Pre-Installation & Testing
All piping is fully integrated within the floor and wall cavities during factory pre-fabrication. We utilize a centralized manifold design to minimize hidden joints and reduce the risk of leaks. Every connection point undergoes a strict hydrostatic pressure test before leaving the factory, guaranteeing system integrity and zero leakage.
3. True Plug-and-Play Connection
All critical utility ports for hot and cold water, as well as main sewage and greywater discharge, are precisely routed and clearly labeled with color-coded visual tags. On-site installation is effortless: simply connect your local water mains and septic/sewer lines to the designated external interface. No complex mapping or guessing required.
4. Global Standards & Certifications
Manufactured to meet both Australian and European plumbing regulations. Fully compliant with AS/NZS 3500 (Plumbing and drainage) and WaterMark certified in accordance with AS/NZS 4020 for materials in contact with drinking water. Delivers a reliable, hygienic, and code-compliant water solution for residential and commercial projects worldwide.
Electrical System
1. Premium Wiring & Components
Our pre-wired electrical system uses high-grade VDE/UL-certified flame-retardant wiring and robust UL-listed switches, sockets, and LED lighting fixtures. All cables are securely routed through floor, wall, and ceiling cavities with protective conduits and heavy-duty tension-resistant harnesses—ensuring the system remains completely intact and functional throughout the expansion and folding mechanism.
2. Advanced Distribution & Circuit Protection
The system is pre-configured with a main distribution panel equipped with MCB (Miniature Circuit Breakers) and RCD (Residual Current Device) for comprehensive electrical safety. We provide dedicated circuits for high-load appliances, such as air conditioners and bathroom heaters, preventing overloads and ensuring reliable performance in all conditions.
3. Strategic Layout & Global Adaptability
Switches and general outlets are positioned at user-friendly heights (H=0.65m and H=1.2m), while high-load air conditioner outlets are placed at H=1.8m. We offer multiple socket configurations—including American, Australian, European, and British standards—to match your market. The entire system can be customized to support 230V/50Hz (CE) or 120V/60Hz (UL) standards, with single-phase or three-phase inputs based on your local grid.
4. True Plug-and-Play Installation
All electrical works are fully factory-pre-installed, completely eliminating the need for on-site electrical labor. An IP66 weatherproof industrial external power inlet with a locking ring is mounted on the exterior wall, allowing for just one simple connection. Simply plug in your external power supply, and your home is ready for immediate, hassle-free occupancy.
How to install an expandable container house
Installation diagram
1. Pre-Installation Preparation
1.1 Site Selection & Preparation
✓ Surface: Ensure the ground is level and compacted.
✓ Foundation Types: We recommend concrete piers, steel screw piles, or a level concrete slab.
✓ Space Requirement: Clear a workspace at least 2 meters wider than the expanded dimensions.
1.2 Equipment Needed
✓ Crane: Minimum 5-10 ton capacity (depending on unit size).
✓ Tools: Leveling instrument, power drill, wrench set, and silicone sealant gun.
2. Unloading & Positioning
✓ Step 1: Use the four corner lifting points to lift the unit from the truck/container.
✓ Step 2: Place the central “core” box precisely onto your prepared foundation.
✓ Step 3: Leveling (Critical): Use a level to adjust the support legs. If the core box is not level, doors and windows may not align correctly.
3. Expansion Process (Step-by-Step)
Step 4: Roof Expansion
✓ Unlock the transport buckles.
✓ Use the internal winch or hydraulic system to lift the roof panel to the designated angle and secure it with supporting bolts.
Step 5: Floor Unfolding
✓ Slowly lower the floor panels on both sides.
✓ Extend the adjustable support feet underneath the floor immediately to ensure stability.
Step 6: Wall Panel Deployment
✓ Pull out the end wall panels and side wall panels.
✓ Ensure the tongue-and-groove joints are tightly fitted.
4. Sealing & Securing
✓ Interior Bolting: Bolt the walls, floor, and roof from the inside using the provided heavy-duty fasteners.
✓ Waterproofing: Apply high-grade outdoor silicone sealant to all external joints and junction strips to ensure 100% weatherproofing.
✓ Trim Installation: Install the interior and exterior corner decorative trims.
5. Utility Connections
✓ Electrical: Connect the main external power supply to the pre-installed IP66 distribution box.
✓ Plumbing: Connect your local water inlet to the DN25 PPR pipe and the waste outlet to the DN110 PVC sewage pipe.
6. Post-Installation Check
✓ Water Test: Use a hose to test the roof drainage and window seals.
✓ Door/Window Ops: Ensure all doors and windows open and close smoothly.
✓ Electricity Test: Test all sockets, lights, and the RCD safety switch.
Safety Warnings
• Do not perform installation during winds exceeding 30km/h or heavy rain.
• All personnel must wear helmets and safety vests.
• Electrical hookups must be verified by a licensed local electrician.