Steel Structure Warehouse Introduction

Steel structure warehouse is a modular storage building assembled with standardized steel main materials and thermal insulation sandwich panels. It allows flexible customization of span, floor height, insulation grade and load-bearing standard. Featuring fast erection and controllable construction cost, it can be disassembled, relocated and reused. It is widely applied in e-commerce warehouses, factory raw material depots, cold chain storage, overseas industrial park warehouses and other projects.

1. Construction and Cost Advantages

Fast construction speed: Steel components of steel structure warehouses are prefabricated in factories, with only on-site assembly required. The construction period is reduced by over 50% compared with brick-concrete buildings, enabling quick commissioning and operation.

Low overall cost: Steel components for steel structure warehouses are lightweight, cutting investment in foundation civil works. Modular production lowers labor costs, and long-term maintenance expenses are economical.

Detachable and reusable: The steel parts of steel structure warehouses can be disassembled, suitable for relocation, reconstruction and resale, ideal for temporary warehouses and overseas projects.

2. Practical Space Advantages

Large span and column-free space: The single span of steel structure warehouses can reach dozens of meters with no internal obstructions. There are no restrictions for forklifts, storage racks and large equipment placement, greatly improving warehouse space utilization rate.

Customizable eave height: The eave height of steel structure warehouses can be increased as required to accommodate high-rise racking and heavy goods stacking.

Flexible modification: Doors and windows can be added, expansions carried out, and solar roofs installed in later periods with simple renovation work.

3. Structural Safety and Durability

Lightweight steel components deliver excellent seismic performance, making steel structure warehouses more adaptable to earthquake and typhoon-prone areas than concrete buildings.

With high steel toughness and strong load-bearing capacity, the warehouse can meet the load requirements for heavy goods and crane equipment.

Equipped with anti-corrosion galvanized steel structures and waterproof sandwich panels, the warehouse features rust and water resistance, achieving a service life of 20–30 years.

1. H-beam for steel structure warehouse (Hot-rolled H-beam)

Advantages: Sound mechanical properties, high strength and outstanding stability. Ideal for large-span, heavy-load warehouses and workshops equipped with overhead cranes.

Application: Large warehouses, heavy-duty plants and projects with crane loads.

2. Welded H-beam for steel structure warehouse

Fabricated by cutting and welding steel plates. Dimensions can be customized, and it is more economical than hot-rolled H-beam.

Application: Most steel structure warehouses and widely adopted for export projects.

3. C-section steel / Z-section steel for steel structure warehouse (Purlins, secondary beams for roof and wall, non-primary load-bearing components)

C-section steel: mostly used for wall purlins;

Z-section steel: featuring good lap joint performance, mainly applied as roof purlins and suitable for large roof surfaces.

1. National Standard Grades for Main Members (Steel Columns, Steel Beams, H-beams)

Q235B

Yield strength: ≥235MPa, ordinary carbon structural steel

Features: Good plasticity, easy welding and economical cost. It undergoes B-grade impact test at room temperature, suitable for ordinary warehouses and light-load workshops.

Application: General steel structure warehouses and secondary load-bearing members. Not the priority option for typhoon-prone, heavy-load or crane-equipped projects.

Suffix letters A/B/C/D: Represent low-temperature impact requirements. Grade B is widely used for domestic steel structures; Grades C and D are applied in frigid northern areas.

Q355B

Yield strength: ≥355MPa, low-alloy high-strength steel with approximately 50% higher strength than Q235.

Features: High bearing capacity and strong deformation resistance. Suitable for large-span, heavy-load warehouses and workshops in typhoon-prone areas or equipped with overhead cranes. Its price is higher than Q235B.

Application: Main steel columns and beams for large warehouses, heavy-duty factories and overseas projects with high wind pressure.

2. European Standard Galvanized Steel Grades (S-GD series, for purlins, wall and roof base sheets, widely used for exports) S = structural steel; number = yield strength; GD = hot-dip galvanized structural base sheet; +Z denotes zinc coating.

S250GD+Z

Yield strength ≥250MPa, matching the strength grade of domestic Q235. Most commonly used for purlins in export projects.

With built-in hot-dip galvanized coating, it delivers excellent rust resistance and requires no subsequent painting. Mainly used for C/Z purlins and prepainted base sheets.

Suitable for secondary members of overseas warehouses, not as primary material for steel columns and beams (it is merely thin galvanized sheet).

S350GD+Z

Yield strength ≥350MPa, high-strength galvanized steel equivalent to Q355 in strength.

Applied to roof purlins and photovoltaic supports for high wind pressure and large-span projects, with higher cost than S250GD.

In summary, benefiting from factory prefabrication, short construction period, large-span space, favorable seismic performance, disassembly and reusability, steel structure warehouses can meet the construction demands of domestic factory and warehouse projects as well as overseas export engineering projects, delivering safe, reliable, economical and efficient warehousing buildings.

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