Metal Profiled Sheet, also called corrugated metal panel, is produced by roll forming thin steel or aluminum alloy coil into a corrugated cross-section at ambient temperature. The base material is selected according to the project environment and load requirements. SENBO operates multi-roll continuous forming lines and carries out dimensional checks on rib height, sheet width, and profile geometry during production. The company also maintains incoming inspection records for base metal thickness and coating weight.
The Metal Profiled Sheets are formed on continuous roll forming lines and can be produced in lengths from several meters to tens of meters. Factory prefabrication provides high dimensional accuracy but is limited by transport length. On-site forming allows sheet length to match the project, reducing end laps and saving material and labor. Products are classified by cross-section into V-shaped, U-shaped, W-shaped, ribbed, stiffened, and dovetail-grooved types. By application, they include roof panels, wall panels, composite floor decking, and arched structural panels.
| Item | Parameter / Specification | Notes |
|---|---|---|
| Common Sheet Thickness | Roof and wall: 0.4–1.6 mm; floor deck and silo: 2–3 mm or more | Thicker material for load-bearing uses |
| Rib Height Range | 10–200 mm | Height-to-thickness ratio preferably below 200 |
| Base Material Types | Hot-dip galvanized / Al-Zn coated / Color-coated / Aluminum alloy | Selected based on environment |
| Galvanized Steel Grade | Z275, Z450 | Total double-sided coating mass 275 g/m² or 450 g/m² |
| Al-Zn Coated Steel Grade | AZ150 | Coating composition: 55% Al, 43.5% Zn, 1.5% Si |
| Steel Usage for Roofing | Approx. 5–11 kg/m² without insulation | Lightweight envelope |
| Economical Span | Approx. 3.5 m | May vary by profile and load |
| Applicable Standard | GB/T 12755-2008 | Profiled steel sheets for building |
Profiled metal sheets are commonly used for roof and wall enclosures in industrial plants and warehouses due to their low self-weight and adequate strength. For projects without thermal insulation, steel consumption is about 5 kg/m² to 11 kg/m². The metal roofing at the Pingliang Sports Park complex, installed between June 2020 and June 2023, used 0.6 mm thick Al-Zn coated profiled steel sheets as the roof base layer. The project received the Silver Award for Engineering Technology at the 2024 Building Waterproofing Industry Science and Technology Awards, which indicates the material performed acceptably in a large public facility.
When combined with concrete, profiled steel sheeting acts as both permanent formwork and tensile reinforcement. This approach removes the need for traditional timber formwork and temporary shoring. To improve the bond between the steel and concrete, shear studs can be pre-welded to the sheet, or the sheet can be formed with bidirectional stiffening ribs. Composite floor systems are widely used in high-rise buildings and multi-story industrial structures.
The Metal Profiled Sheets can be formed as flat or curved panels. Curved sheets enable arched buildings that combine beam, slab, and column functions into a single structural form. Roof systems can be produced as curved or variable-section panels and are suitable for waterproofing grades I through III with a minimum slope of 1.5 degrees.
Roof systems typically use either lapped screw-fixed connections or high-standing-seam interlocking designs. The standing seam method uses concealed, non-penetrating fasteners and has been applied in projects such as terminal buildings at Beijing Capital International Airport. SENBO's 360° standing-seam profiled sheet system has a panel width of 430 mm and a rib height of 65 mm. It is designed for a drainage slope of at least 5% and purlin spacing not exceeding 1.5 m. The concealed fastening method improves resistance to wind uplift and reduces leak paths compared with exposed fasteners.
The choice depends on the atmospheric environment and appearance requirements. Galvanized sheets are economical for mild conditions. Al-Zn coated sheets offer better corrosion resistance and are preferred for coastal or industrial locations. Color-coated sheets add a durable decorative finish and are chosen when appearance matters or when additional coating protection is needed.
Yes, but the profile and thickness may differ. Roof panels must handle water drainage and wind uplift, while wall panels focus more on wind load and appearance. The manufacturer's span tables should be used to select the correct profile for each application.
For lapped screw-fixed systems, a minimum slope of 5% is typical. Standing seam systems can be used on slopes as low as 1.5 degrees when installed with proper seam sealing and drainage design. The project's design wind load and rainfall intensity should also be considered.
Long sheets expand and contract with temperature changes. Standing seam systems allow movement through sliding clips. For lapped systems, the end lap detail and fastener spacing should be designed to accommodate thermal movement. The sheet length and temperature range should be reviewed by the project engineer.
Suppliers should provide mill test certificates for the base metal and coating weight records. Profile dimensions such as rib height, pitch, and effective width are checked during production and before shipment. For projects with specific wind uplift requirements, test reports or calculations can be provided. On-site receiving inspection should verify sheet thickness, profile shape, coating condition, and length against the order.
Address
No. 17 Guanghai Road, Jinghai Economic Development Zone, Tianjin, China
Tel
