When you are storing frozen seafood, chilled produce or temperature-sensitive pharmaceuticals, the building itself is part of the cooling system. A poorly detailed steel cold storage building leaks energy through panel joints, creates condensation at steel connections and forces the refrigeration plant to work harder than it should. Over a 15-year operating life, that inefficiency often costs more than the original structure.
Canglong designs and builds prefabricated steel cold storage buildings as integrated systems — not a shed with insulation added later. We have delivered refrigerated warehouses and cold storage facilities to the Caribbean, South America, Southeast Asia and other regions where high humidity, corrosive coastal air or strict local codes make the details matter.

Industrial cold storage is not just a warehouse kept cold. The building has to do four things at the same time:
We start every cold storage project from the operating parameters: temperature zones, pallet layout, daily throughput and the governing building code. The steel frame, insulation envelope and refrigeration interfaces are then detailed together.
Each Canglong cold storage building combines four subsystems. The exact specification changes with the project, but the logic stays the same.
The main frame uses welded H-section columns and beams in Q235B or Q355B steel. For cold storage we typically design clear spans up to 36 m so racking and forklift aisles are not interrupted by internal columns. The frame is sized for the heavier dead load of thick insulated roof panels, roof-mounted evaporator units and high-bay racking reactions.
In frozen zones we pay attention to steel brittleness at low temperatures and specify suitable steel grades and notch-toughness where the code requires it. In coastal or high-humidity locations we specify hot-dip galvanizing to the thickness needed for the environment, not a default coating.
We use high-density polyurethane (PUF) or polyisocyanurate (PIR) sandwich panels, 100–200 mm thick depending on the temperature class. The panels are joined with tongue-and-groove edges and sealed to form a continuous vapor barrier on the warm side. This is what stops warm, moist air from reaching the cold steel and forming condensation or frost inside the panel.
Panel thickness is selected zone by zone. A pharmaceutical holding room at 2–8°C does not need the same envelope as a blast freezer at -30°C, and a building in the Middle East does not use the same vapor-barrier detailing as one in Northern Europe.
Cold storage floors take forklift loads while sitting on ground that can freeze from underneath. We design insulated ground slabs with XPS insulation and, where needed, under-slab heating to prevent frost heave. The floor finish — concrete sealed or epoxy — is chosen for slip resistance, hygiene and the traffic load of the operation.
The steel frame is pre-detailed with fixing points for evaporators, insulated pipework, dock shelters, rapid-roll doors and air curtains. When the refrigeration contractor arrives on site, the structure is already prepared, which reduces clashes and on-site welding that can damage the vapor barrier.

These are not marketing examples — they are actual Canglong deliveries where the same engineering principles were applied to different site conditions.

A 1,588 m² facility in the Caribbean with a 200 mm polyurethane cold-room core and weather-resistant PU external panels. Built to handle high temperature and high humidity.

38 m × 25 m × 8 m, 950 m² refrigerated warehouse in Los Lagos. PU sandwich panels for walls and roof, double-sloping roof for rainwater run-off.

26.6 m × 42 m × 7.5 m protective steel shed enclosing a polyurethane cold-room core. Designed for tropical humidity and rapid installation.
We are a steel structure and sandwich panel manufacturer, not a trading company. That changes what we can deliver:

| Item | Typical Range |
|---|---|
| Temperature zones | +10°C ambient down to -35°C blast freeze |
| Clear span | Up to 36 m, customisable |
| Eave height | 4–12 m, designed around racking and equipment |
| Main steel grade | Q235B / Q355B, or equivalent ASTM A36 / A572 |
| Insulation core | PUF / PIR, 100–200 mm |
| Thermal conductivity | ≤ 0.025 W/(m·K) |
| Design standards | AISC / BS / Eurocode / AS/NZS / GB, project-specific |
These ranges are starting points. The final specification comes from your storage plan, local climate and building code.

If you are planning a new cold storage facility, expansion or retrofit, send us the basics — site location, required temperature zones, approximate dimensions and how the building will be used. Our engineers will review the climate, code and operational loads and return a preliminary steel building proposal with layout and budget.
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Canglong projects cover more than 120 countries and regions around the world, providing one-stop steel structure building solutions from design to installation.