Prefabricated Large Span Steel Structures Prefab Metal Warehouse Buildings
| Design Dimension | Key Points | Technical Details |
|---|---|---|
| Structural Safety | Seismic/wind resistance, dynamic load optimization, fire and corrosion protection | BRB dampers, wind tunnel testing; fireproof coating (≥2h) + hot-dip galvanizing |
| Material Selection | High-strength steel, lightweight envelope, eco-friendly materials | Q355B steel (yield strength≥355MPa); polyurethane panels (fire rating B1); recycled steel usage≥30% |
| Prefab Component Design | Large-span modular design, standardized joints, transportation segmentation | 40m-span trusses; bolted-welded hybrid joints; segments≤15m (transport height≤4.5m) |
| Energy Efficiency | Natural ventilation/lighting, PV systems, rainwater recycling | Skylights (≥20% coverage); PV efficiency≥22%; underground rainwater storage≥150m³ |
| Construction Quality | High-precision prefabrication, on-site assembly management, digital acceptance | BIM modeling (±3mm); UT for welds (coverage≥40%); 100% bolt torque inspection |
- Seismic & Wind Resistance: Buckling-Restrained Braces (BRBs) and flexible frames dissipate seismic energy; wind tunnel tests validate load distribution
- Dynamic Load Design: Simulate crane loads (e.g., 50t overhead cranes) and stacking loads per GB 50009-2012, ensuring joint fatigue life≥50 years
- Fire & Corrosion Protection: Apply intumescent coatings (fire resistance≥2h) and hot-dip galvanizing + epoxy coatings for harsh environments
- Main Steel: Q355B steel (tensile strength 470-630MPa) for primary structures; cold-formed steel (1.5-3mm thickness) for lightweight needs
- Envelope System: Polyurethane panels (thermal conductivity≤0.024W/m*K) with rock wool insulation (density≥100kg/m³)
- Eco-Materials: Recycled steel (recovery rate≥30%) and solvent-free epoxy flooring (VOC≤50g/L) reduce carbon footprint
- Large-Span Modularization: 40m-span trusses or space frames maximize storage space (clear height≥10m)
- Standardized Joints: Predefined joint catalogs (e.g., rigid beam-column connections) cut welding time by 25%
- Transportation & Assembly: Segments≤15m with temporary bracing; on-site assembly error≤3mm
- Passive Design: Skylights (≥20% coverage) and smart louvers reduce HVAC energy use by 40%
- Renewable Energy: Monocrystalline PV panels (≥300kW*h/day) and ground-source heat pumps cover 30%+ energy demand
- Resource Recycling: Bolted connections and precast foundations enable 95%+ material recovery at end-of-life
- Factory Prefabrication: Laser cutting (±1mm) and robotic welding (99%) ensure component consistency
- On-Site Management: BIM + 3D scanning monitors installation; column verticality≤H/1000, beam ≤L/1500
- Acceptance Standards: Per GB 50205-2020: Welds: UT≥40%, MT full coverage; Bolts: 100% torque inspection, preload error≤±10%
| Component | Description |
|---|---|
| Primary Framing | Box beam column, cross steel column, H-shaped steel column, steel beam |
| Secondary Framing | Galvanized Z and C sections purlin |
| Roof and Wall panels | Steel sheet and insulated sandwich panels (EPS, fiberglass wool and PU) |
| Steel Decking Floor | Galvanized steel decking board |
| Structural subsystem | Divider, gutter, awning, partition wall |
| Mezzanines, Platforms | Painted or galvanized H beam |
| Other Building Accessories | Sliding doors, roll up doors, aluminium windows, louvers, etc. |
| Service Life | 50-70years |
| Support | Steel angle, steel pipe, steel round |
| Place of Origin | Qingdao, Shandong, China |
| Application | Workshop, warehouse, poultry house, garage etc |
| Grade | Q235B, Q355B or as per customer's need |
| Bolt Grade | M20, M16, M14 etc |
| Connection | Intensive bolt, ordinary bolt |
| Window | PVC steel or aluminum alloy |
| Downspout | PVC pipe or as per customer's request |
| Door | Sliding or rolling door |
| Purlin | C/Z shape profile |
| Panel | EPS/PU/fiber glass/rock wool |
| Main Frame | Welded or hot rolled H-shaped steel, columns, beams, box beams and columns |
- Customized design is welcomed
- For accurate quotation and drawings, please provide: length, width, eave height and local weather conditions

- We provide proposed design plans and valuable quotations based on your requirements
- Our experienced engineers will provide the best program according to your needs
- Comprehensive services including design, manufacturing, installation and after-sale service
- Optional installation guidance, supervision, and training services available
- Building Dimension: Length*width*height, eave height, roof type etc.
- Doors and windows: Dimension, quantity, position
- Local climate: Wind speed, snow load, earthquake conditions
- Insulation material for roof and wall: Sandwich panel or single metal sheet
- Crane requirements if applicable: Capacity and specifications
- Special requirements: Fire proofing, isolated roof, roof ventilation, daylighting etc.
- Weekly Quality Audit meetings to address processing weaknesses
- Bi-weekly employee training sessions
- Production according to International Steel Structure Standard with ISO 9001 Quality Control System
- Monthly client feedback collection for quality improvement
- Quality inspection reports for every production process

Our experienced engineers can design buildings of any shape according to your requirements. We take your building investment as seriously as you do.
We are professional manufacturers of steel structure buildings.
Yes, we can provide installation, supervision, and training services. We dispatch engineers to guide assembly work and provide detailed installation drawings with 24-hour online support.
Our professional QC team monitors quality at all manufacturing stages. We accept third-party inspections from agencies like SGS and BV.
We have a complete engineering team using advanced software (Tekla, AutoCAD, PKPM, etc.) to provide economical solutions. Preliminary costing and design are done at no extra cost.
Our steel structures have limited warranties. Lifespan typically reaches 50-100 years depending on material quality, design standards, construction quality, and maintenance.
| 1 | Location (where will be built?) | _____country, area |
| 2 | Size: length*width*height | _____mm*_____mm*_____mm |
| 3 | Wind load (max. wind speed) | _____kn/m2, _____km/h, _____m/s |
| 4 | Snow load (max. snow height) | _____kn/m2, _____mm |
| 5 | Anti-earthquake | _____level |
| 6 | Brickwall needed or not | If yes, 1.2m high or 1.5m high |
| 7 | Thermal insulation | If yes, EPS, fiberglass wool, rockwool, PU sandwich panels; if not, metal steel sheets |
| 8 | Door quantity & size | _____units, _____(width)mm*_____(height)mm |
| 9 | Window quantity & size | _____units, _____(width)mm*_____(height)mm |
| 10 | Crane needed or not | If yes, _____units, max. lifting weight____tons; max. lifting height _____m |
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.