
Direct answer: a standard 40HQ container can load up to 14 quick-assembly flat-pack container houses shipped in knock-down form, or 10 folding container houses with 50 mm wall panels (8 units with 75 mm panels). The double-wing expandable container house ships in its folded state at standard 20 ft dimensions (5900 × 2200 × 2480 mm). Loading density is the biggest single lever on per-unit shipping cost for overseas camp projects — and it is decided by the product's transport design, not by the freight forwarder.
Wanbang Holding Group manufactures all three transport formats and has delivered modular buildings to more than 50 countries. This guide explains how each format packs into a 40HQ container, with the real loading figures from Wanbang's product specifications.
The quick-assembly flat-pack container house is designed so that all parts can be shipped in knock-down form — columns, beams, wall panels, and floor panels packed flat and separately. Columns connect to the top and bottom beams with bolts on site. This knock-down design greatly reduces shipping volume, which is what allows one 40HQ container to load up to 14 sets.
| Specification | Quick-Assembly Flat-Pack Container House |
|---|---|
| Standard size (L×W×H) | 6055 × 2990 × 2896 mm |
| Frame | High-strength galvanized steel |
| Wall panels | Color steel rock wool sandwich panels |
| Floor | Cement fiber board with PVC flooring |
| Connection | Bolt-connected columns to top / bottom beams |
| Transport form | All parts shipped knock-down (flat-packed) |
| Loading quantity | Up to 14 sets per 40HQ container |

For a 100-person construction or mining camp, that density means the entire dormitory and office stock can move in a handful of containers instead of dozens — often the difference between a viable project budget and an overblown one.
The folding container house compresses to about one-sixth of its original volume. Folded flat (5900 × 2500 × 400 mm), it stacks inside a 40HQ container; on site it unfolds through hinges, locks, and dedicated connectors.
| Item | Folding Container House |
|---|---|
| Expanded size (L×W×H) | 5900 × 2500 × 2470 mm |
| Folded size (L×W×H) | 5900 × 2500 × 400 mm |
| Volume reduction | Compressed to about 1/6 of original size |
| Loading quantity | 10 units per 40HQ (50 mm wall panels) / 8 units (75 mm panels) |
| Setup | Only 4 steps, about 15 minutes to build one unit |
The trade-off is transparent: thicker 75 mm wall panels improve insulation and rigidity, and they reduce the load from 10 to 8 units per container. Projects in hot climates or high-wind regions often accept that cost; short-term rental fleets usually maximize density at 50 mm.

The double-wing expandable container house takes a different approach: it travels as a standard 20 ft unit in its folded state (5900 × 2200 × 2480 mm) and unfolds on site to 5900 × 6300 × 2480 mm — approximately 36 m² of floor area, layoutable as two bedrooms, one kitchen, one living room, and one bathroom. Because it ships as an integrated folded box rather than loose panels, it suits buyers who prioritize on-site speed and a home-style interior over maximum container density.
| Format | Units per 40HQ | Best for |
|---|---|---|
| Quick-assembly flat-pack | Up to 14 sets (knock-down) | Camps needing many standardized offices, dorms, welfare rooms |
| Folding container | 10 units (50 mm) / 8 units (75 mm) | Rental fleets and projects needing the fastest repeat deployment |
| Double-wing expandable | Ships folded at 20 ft size | Living quarters needing larger, home-style units (≈36 m²) |
Up to 14 sets. The quick-assembly flat-pack container house ships with all parts in knock-down form, which greatly reduces shipping volume and cost.
10 units with 50 mm wall panels, or 8 units with 75 mm wall panels. The folding design compresses each unit to about one-sixth of its original volume.
One unit is assembled in only 4 steps, taking about 15 minutes, using hinges, locks, and dedicated connectors — no heavy equipment required.
Because loose-packed panels and frames fill a container far more efficiently than pre-assembled boxes. More units per container means lower freight cost per unit — up to 14 flat-pack sets share the freight of a single 40HQ container.
Planning an overseas camp and want a loading plan for your route? Contact Wanbang for a container loading calculation.
Contact: Jade · Tel: +86 13312807790 · WhatsApp: +966 50 2737 116 · Email: Jade.li@gdwbhouse.com
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