- Barrel and arched roofs, canopies and walkways
- Crimp-curved sheets for curved eaves and ridges
- Made from standard WS trapezoidal profiles
- Same coatings and colours as flat sheets
Curves without joints
Curved sheets turn a roof into an arch with no ridge joint – for canopies, walkways, sports halls and architectural roofs. Two methods are used:
Two ways to curve a sheet
- Roll-curved (smooth) sheets – bent to a large radius for barrel roofs; chord length up to about 1.2 m per curved piece in the reference range, longer arches assembled from several sheets.
- Crimp-curved sheets – crimped to a tight radius (minimum radius about 300 mm, minimum length about 560 mm) for curved eaves, ridges and bullnose details.
Achievable radii depend on profile, thickness and coating – confirm with our engineers before design.
Tiêu chuẩn và yêu cầu theo thị trường
Các quy chuẩn mà World Steel áp dụng để thiết kế, gia công và lập hồ sơ cho sản phẩm này – cùng các yêu cầu chính về hình học và tải trọng tại từng thị trường.
Hoa Kỳ
- ASTM A653 / A792Galvanized / 55 % Al-Zn coated sheet
- ASTM A755Coil-coated (pre-painted) metallic-coated sheet
- AISI S100Cold-formed steel design
- ASTM E1592 · UL 580Wind uplift testing of roof panels
Úc / NZ
- AS 1397Metallic-coated steel sheet – G300 to G550, Z / AZ coatings
- AS/NZS 2728Pre-finished / pre-painted sheet
- AS 1562.1Design and installation of metal roof and wall cladding
- AS 4040Methods of testing sheet roof and wall cladding (incl. cyclonic)
Châu Âu
- EN 10346Continuously hot-dip coated steel flat products
- EN 10169Organic coated (pre-painted) steel flat products
- EN 14782Self-supporting metal sheet for roofing and cladding – CE marking
- EN 1993-1-3Cold-formed members and sheeting
Nội dung chỉ mang tính tham khảo – chỉ dẫn kỹ thuật của dự án, phiên bản quy chuẩn được áp dụng và cơ quan có thẩm quyền là căn cứ quyết định.
Hoàn thiện bề mặt
| Hoàn thiện bề mặt | Tiêu chuẩn / ghi chú |
|---|---|
| Zinc-aluminium (AZ) coated | AZ100–AZ150 · AS 1397 / ASTM A792 / EN 10346 |
| Galvanized (Z) | Z180–Z275 · AS 1397 / ASTM A653 / EN 10346 |
| Pre-painted | Polyester or SMP paint system on AZ / Z substrate · AS/NZS 2728 / ASTM A755 / EN 10169 |
| Colours | Standard colour range; special colours on minimum order quantity |
Câu hỏi thường gặp
Which radius can be achieved?
Crimp-curved sheets reach a minimum radius of about 300 mm; smooth roll-curved sheets need larger radii. The exact limit depends on profile and thickness.






