Hot-dip Galvanized Steel Frame Building with Large Span and High-strength Steel for Commercial Use
Maximize your commercial value with our Large Span Steel Frame Buildings, engineered specifically for high-end commercial environments such as shopping malls, car showrooms, exhibition centers, and logistics hubs. Unlike traditional painted structures, our buildings feature Hot-dip Galvanized Steel Components (zinc coating ≥ 600g/m²), offering superior corrosion resistance even in high-humidity or coastal areas. The Clear Span design (up to 60m without intermediate columns) ensures 100% usable interior space, allowing flexible layout configurations for your business needs.
- Ultimate Durability: Full hot-dip galvanized main frame and secondary members (C/Z purlins) provide a service life of 50+ years with near-zero maintenance.
- Expansive Clear Span: Professional structural design achieves spans of 30m-60m without internal columns, ideal for open-plan commercial operations.
- Rapid Installation: All components are pre-cut, pre-drilled, and pre-welded at the factory, reducing on-site construction time by 40%.
- Aesthetic Flexibility: Compatible with glass curtain walls, aluminum composite panels, and modern cladding systems to create a premium commercial appearance.
| Parameter | Specification |
|---|---|
| Main Steel Frame | Q355B / Q235B High-strength Solid Web H-Beam |
| Surface Treatment | Hot-dip Galvanized (Standard: ASTM A123 / ISO 1461) |
| Clear Span | 20m - 60m (Column-free design) |
| Eave Height | 6m - 20m (Customizable for multi-story options) |
| Wind Resistance | Up to 140 km/h (Designed to local codes) |
| Seismic Load | Grade 8 |
| Roof Live Load | 0.5 kN/m² - 2.0 kN/m² |
| Protection Level | Coating Process | Zinc Thickness | Salt Spray Test | Expected Service Life |
|---|---|---|---|---|
| Standard Anti-Rust | Alkyd Painting (2 coats) | N/A (Dry Film: 80μm) | 200 Hours | 10-15 Years |
| Heavy Duty (Recommended) | Hot-dip Galvanizing | 85μm - 120μm | > 2000 Hours | 50+ Years (Inland) |
| Marine Grade | Epoxy Zinc-rich + PU Topcoat | 150μm - 200μm | > 3000 Hours | 25+ Years (Coastal) |
| Component | Material Spec | Note |
|---|---|---|
| Column & Beam | Q355B Welded H-Section Steel | High load-bearing capacity |
| Purlin (Roof/Wall) | Galvanized C/Z Section Steel | 275g/m² Zinc Coating (No rust issues) |
| Roof Panel | 0.5mm/0.6mm Color Steel Sheet | Optional: Standing Seam (Waterproof) |
| Wall Cladding | PU/Rockwool Sandwich Panel | Thermal insulation & Fireproof |
| Lighting | Skylight Panel / Polycarbonate | For natural daylighting (Energy saving) |
| Gutter & Downspout | Galvanized Steel / PVC | Efficient drainage system |
To help you quickly calculate the cost of steel structures, please prepare the following information in advance:
- Dimension: Length, width, height, eave height, roof pitch, etc.
- Doors and windows: Dimension, quantity, position.
- Local climate: Wind speed, snow load, seismic magnitude etc.
- Insulation material: Panel type, sandwich materials, sandwich thickness.
- Crane metal structures: if have overhead crane, please tell the lifting height and lifting weight.
- Is there any materials that are not allowed to import to the country where the structure is planning to use?
- If you have other requirements, such as fire proofing, insulated roof, etc. Please let us know.
- It's better if you have your own drawings or pictures. Please send them to us.
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.