07
2020
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12
The difference between a shipping container and a prefabricated modular container
Typically, quick‑assembly containers and prefabricated shipping containers are commonly referred to simply as “containers.” In terms of appearance and materials, there is little noticeable difference; however, in terms of workmanship, the two are worlds apart.
1. Introduction to Quick-Assembly Containers and Packaged Containers
Quick‑assembly containers are an improved version of modular housing units, also known as “quick‑assemble boxes,” while “packaged containers” evolved from export‑type container homes. They are modular building products based on a steel frame and lightweight wall panel structural system.
2. Differences between prefabricated shipping containers and quick-assembly containers
The main difference between the two lies in their framing‑and‑connection methods: quick‑assembly containers join uprights to top and bottom beams with fasteners, whereas modular containers weld these components together. Consequently, assembling a modular container takes considerably longer than a quick‑assembly unit. Naturally, their structural integrity and waterproofing also differ, with modular containers offering a slight edge. Taking a 3m × 6m modular container commonly available in the domestic market as an example, its primary components include four vertical columns, four horizontal beams each for the upper and lower frames, and eight corner brackets (also called corner fittings). A total of 64 screws are used to secure the corner brackets to the frame and columns. Additionally, there are four pressed‑groove panels, nine secondary cross‑beams in the bottom frame, and wall and roof panels made of double‑sided color‑coated steel sheets with an insulating core of rock wool or glass wool. Modular container units also feature dedicated drainage pipes concealed within the four columns, effectively mitigating the risk of leaks—unlike conventional shipping‑container homes, where water tends to drip down the sides from the top.
3. The commonalities between the two
Both types of container structures are convenient and quick to transport and install, feature an attractive, sophisticated appearance, and can be customized. Each can be configured as a three‑story building, with comparable seismic performance.
4. Summary
Considering both long-term usability and construction time, prefabricated container houses offer better value for money. Today, as people place greater emphasis on safety, quality, and aesthetics, prefabricated container houses are undoubtedly the preferred choice.
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