Steel structures & modular buildings — factory direct Become a partner WhatsApp: +86 157 1383 3389
BST / PRODUCTS

BST Z-Fold Two-Storey Container House

Prefabricated Container House

Z-fold two-storey container house: cuts transport volume by up to 70%, then unfolds into a two-storey building with more than double the floor area.

Key specifications

External Dimensions (L×W×H)
5900 × 2480 × 2480 mm
Internal Dimensions (L×W×H)
5740 × 2340 × 2280 mm
Folded Dimensions (L×W×H)
5900 × 2480 × 450 mm
Thermal Conductivity
λ = 0.037 W/(m·K)
Sound Insulation
≥ 28 dB
Fire Rating
Class A
BST Folding Container - photo 1
BST Folding Container - photo 2

Product overview

The BST Z-fold two-storey container house uses innovative engineering-grade Z-fold technology to compress transport and storage volume by up to 70%. When unfolded it converts instantly into a structurally stable, fully functional modular building with more than double the usable floor area — minimum logistics cost, maximum on-site value — and precise mechanical linkage keeps every fold and unfold smooth and accurate.

01Core structure & materials

Z-fold architecture

An innovative engineering-grade Z-fold mechanism achieves an extreme compression ratio while preserving full structural load capacity.

Precision linkage

Optimised folding trajectories and hinge structures make the fold-unfold cycle smooth, effortless and precisely positioned every time.

Engineering meets design

Industry-leading fold ratio and load capacity sit alongside balanced modern architecture and a comfortable interior — a quality benchmark for industrial mobile buildings.

02Core advantages

01

Up to 70% volume saved

The high fold ratio packs far more units into each sea container and road trailer, attacking cross-border and local freight costs directly.

02

Double the space on site

Unfolded, usable area grows by over 100% versus the transport state — light to ship, heavy on utility.

03

Operational in days

Opening the unit completes the space handover, cutting project preparation cycles and delivering commercial value sooner.

BST Folding Container - photo 3
BST Folding Container - photo 4

Technical Specifications

Dimensions
External Dimensions (L×W×H) 5900 × 2480 × 2480 mm
Internal Dimensions (L×W×H) 5740 × 2340 × 2280 mm
Folded Dimensions (L×W×H) 5900 × 2480 × 450 mm
Performance
Thermal Conductivity λ = 0.037 W/(m·K)
Sound Insulation ≥ 28 dB
Fire Rating Class A
Waterproof Rating Class II
Wind Resistance 0.37 kN/m²
Seismic Rating Grade 8
Floor Live Load 1.8 kN/m²
Roof Live Load 0.42 kN/m²
Structure
Main Frame Galvanized steel frame beams and columns, 2.3 mm wall thickness (zinc coating 80 g/m²)
Secondary Structure Roof purlins 322 × 1.5 mm × 5; floor joists 40 × 80 × 1.5 mm × 9
Connections M10 × 30 high-strength bolts × 48
Surface Treatment Electrostatic powder coating, baking finish
Corner Castings 190 × 150 × 130 mm, 4 top + 4 bottom (lifting corners)
Envelope
Wall Panels V-950 type 50 mm color-steel sandwich panel: outer orange-peel texture / inner white; rock wool 60 kg/m³ or EPS 14 kg/m³ core
Roof V-950 type 50 mm color-steel sandwich panel, 0.3 mm color-coated sheets both sides
Floor Magnesium oxide board 18 mm (Class A fire) + 2.0 mm vinyl flooring
Door & Windows
Entrance Door Steel entry door ≥ 970 × 1970 mm, with lock set (container-house special door)
Window 930 × 930 mm double-glazed sliding window with security guardrail and screen (white / black)
Electrical System
Lighting 36 W LED dust-proof light × 2
Sockets 10 A five-hole sockets × 3, 16 A air-conditioner socket × 1
Distribution Concealed distribution box × 1 (with circuit breaker and leakage protection)
Power Inlet 220 V, 50 Hz, 3P 32 A industrial plug × 1
Wiring Inlet 3 × 6 mm², A/C socket 3 × 4 mm², sockets 3 × 2.5 mm², lighting 3 × 1.5 mm²
Packing & Transport
Loading 10 units per 40HQ container, shrink-wrapped packing

Frequently Asked Questions

What is the difference between X-type and Z-type folding container houses?

They differ in folding structure, on-site unfolding procedure and loading quantity. Standard outside dimensions are 5.8 × 2.46 × 2.43 m and 5.8 × 2.48 × 2.48 m, with 14 and 10 sets per 40HQ respectively. The X-type needs temporary support rods to raise the front and rear end panels; the Z-type needs two long side walls fitted and corner drainage completed.

Can X-type or Z-type folding houses be customised in size?

Non-standard sizes can be considered, but the standard sizes are designed around the folding mechanism and 40HQ transport. Changing the size affects the frame, hinges, folding hardware, panel lengths, door and window positions, lifting method and folded transport dimensions, and may require a 40 ft open-top container. Where more space is needed, joining standard modules is usually more practical than enlarging a single unit.

What is included as standard on the X-type and Z-type?

The two types differ. X-type: galvanised folding steel frame with flat roof, 15 mm cement-based floor, 50 mm EPS wall panels, steel security door, single-glazed uPVC sliding windows and two LED lights. Z-type: hot-dip galvanised frame, 50 mm EPS roof panel, 18 mm cement board with 2.0 mm PVC flooring, 50 mm EPS wall panels, steel door and two sliding windows.

Can fittings and finishes be customised — bathroom, kitchen, doors and windows, colours?

Yes. Bathroom and kitchen options include an integrated bathroom, a partitioned bathroom, a simple kitchen and a premium kitchen. Windows come in uPVC, aluminium alloy or thermal-break aluminium, and doors in steel, roller shutter, double-leaf, aluminium alloy and more. The standard is one door and two windows with positions and quantities customisable. White is the standard exterior with grey and wood-grain available, and the Z-type can take a glass curtain wall on both the short and the long sides.

How are folding houses transported, and can they be folded and moved to another site?

They ship folded into compact units and are secured inside the container — about 14 X-type or 10 Z-type units per 40HQ — with loose parts and accessories packed separately; the destination port needs container handling and transfer equipment, and non-standard sizes may need an open-top container. Yes, they can also be folded and relocated: disconnect water and power, empty or secure furniture and equipment, check the frame, folding hardware, bolts, seals, panels, doors and windows, remove site trims that block closing, and always use the designated lifting points.

What site preparation and on-site work does unfolding require?

Both types need lifting equipment and a level working surface. X-type: lift the unit, stabilise it with support rods, fold up the front and rear end panels and fix the corner posts. Z-type: lift the unit, fix the four corner posts, fit the two long side walls and finish the corners and edges. Prepare level support points, truck and crane access, room to operate the end panels and support rods (X-type) or the two side walls (Z-type), clear obstacles above the lifting area, and reserve water and power connections according to the drawings. Once the frame is fixed, connect services and check doors, windows and systems. Nobody may stand inside the lifting area while the unit is being lifted.

Can folding houses be joined or stacked?

Yes, they can be joined and a two-storey option is available. The foundation, unit and floor connections, stair landings and railings, roof and joint waterproofing, and services must be designed as a whole. Never remove frame members or cut large openings on site without a design. Confirm the full layout, number of storeys, use and site conditions before production, and obtain local approvals.

How do X-type and Z-type folding houses perform in wind and earthquakes?

Wind resistance is typhoon category 10 (wind speed 32.7–41.4 m/s) and seismic resistance reaches intensity 8.

LET’S BUILD WHAT’S NEXT

Request a quote for your project

Tell us the destination, quantity and timeline — our engineers reply within 24 hours.

Your details are stored under "Project inquiries" in the admin. We never publish your contact information.

Related products

Cookies & privacy

We value your privacy

We use cookies to keep this website working, understand how it is used and show you relevant information. You can accept all of them, reject everything that is not essential, or choose category by category. Your choice is stored for 12 months.