Metal wall panels are profiled sheets used for building exteriors. They are produced by roll-forming metal coils or by bonding metal sheets to an insulating core. Common applications include exterior wall enclosures, curtain wall cladding, and interior partitions in industrial plants, public buildings, and large-scale venues. Base material selection depends on the operating environment and durability requirements. SENBO produces these panels on dedicated roll-forming lines, with in-house quality checks covering material thickness, profile dimensions, and coating adhesion, which helps maintain consistent product performance across batches.
| Performance Indicator | Parameter / Specification | Basis or Remarks |
|---|---|---|
| Executive Standard | GB/T 12755-2008 | Profiled steel sheets for building construction |
| Base Material | Galvanized / Al-Zn coated / Color-coated / Aluminum alloy / Stainless steel | Selected based on application environment |
| Panel Thickness | Steel 0.4–1.6 mm; Aluminum alloy 1.5–3.0 mm | Depends on profile and load requirements |
| Yield Strength | 250–550 MPa | Depends on base material grade |
| Galvanizing Mass | 40–275 g/m² | Double-sided |
| Wall Sandwich Panel Wind Load Capacity | ≥5.2 kPa | Verified by 1:1 scale wind uplift test |
| Noise Reduction Coefficient (NRC) | 0.7–0.8 | Perforated sound-absorbing structure with acoustic backing |
| Fire Rating | Class A2 | For aluminum alloy panels |
| Design Service Life | 20–50 years | Aluminum alloy panels typically exceed 20 years |
Wind resistance is a key performance metric for metal wall panels in coastal and high-wind regions. The Alashan Tamusu Natural Alkali Development and Utilization Project is located in the Gobi Desert near the China-Mongolia border. The site has a basic wind pressure of 0.6 kN/m², and the building reaches a maximum height of 61 meters. The project uses a metal envelope system with a total area exceeding 400,000 m². Through theoretical calculations and 1:1 scale wind uplift tests, the wall and roof sandwich panel systems achieved load-bearing capacities of 5.2 kPa and 6.3 kPa respectively. The site remained intact despite multiple sandstorms during construction.
The Terminal 2 building at Zhuhai Jinwan Airport is located in a coastal area with high wind pressures and complex environmental conditions. The project includes 65,000 m² of metal roofing and wall cladding. Continuous stainless-steel welding technology was used to ensure structural stability and watertight sealing of the roof and wall systems, meeting the building's lifecycle performance requirements.
Metal wall panels can be fabricated into straight or curved profiles to accommodate complex architectural designs. In the Alxa Tamusu project, cylindrical silos used vertically arranged profiled steel sheets paired with curved purlins. The finished-product warehouse used a vertical concealed-fastener metal wall system. The panels run the full height without horizontal overlaps and are connected with concealed brackets, providing a clean exterior appearance and reliable wind and sand resistance.
Metal wall panels can integrate perforated sound-absorbing structures. When combined with acoustic backing materials, they achieve a Noise Reduction Coefficient (NRC) of 0.7 to 0.8. Aluminum alloy wall panels can achieve a Class A2 fire rating. Some systems also offer an RH99% moisture resistance rating, making them suitable for high-humidity environments.
Metal wall panels can be finished with PVDF or polyester coatings. These coatings provide resistance to acids, alkalis, salt spray, wind, sun exposure, and acid rain. Aluminum alloy wall panels have a service life of more than 20 years.
Single-skin panels consist of one metal sheet and provide weather protection and appearance but no insulation. Sandwich panels include an insulating core, typically rock wool or polyurethane, and provide thermal performance in addition to enclosure. The choice depends on the building's energy requirements and fire safety needs.
Aluzinc or aluminum alloy are often preferred in coastal areas because of their improved corrosion resistance compared with standard galvanized steel. PVDF coatings also provide better resistance to salt spray and UV exposure.
Yes, many metal wall panels can be curved to match architectural designs. Curved panels are usually produced by roll-forming or press-braking to the required radius. The achievable radius depends on the panel profile, material, and thickness.
Concealed-fastener systems require minimal maintenance. Periodic visual inspection is recommended to check for any loose panels, sealant deterioration, or surface damage. Because fasteners are hidden, they are less exposed to weather, which can reduce long-term corrosion risk.
Manufacturers should provide factory test reports covering base material thickness, coating weight, yield strength, and panel dimensions. For projects with specific wind load requirements, wind uplift test reports can be supplied. On-site receiving inspections should verify that panel profiles, colors, and quantities match the order and that surfaces are free from damage.
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