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Unique cross-sectional shape: The cross-section is in the "Z" shape, with the upper and lower flanges facing opposite directions, which is suitable for the connection of sloping roof panels.
Excellent connection performance: It can be continuously stacked to form multi-span continuous roof trusses, reducing the steel used at the nodes compared to C-shaped steel, and the force distribution is more reasonable, suitable for large-span roofs.
Strong bearing capacity: The moment of inertia in the strong axis direction is large, and when placed diagonally, it can effectively resist the roof load (especially suitable for roofs with a slope of ≥ 1/10).
Lightweight and high strength: Cold-formed thin-walled, less steel used but with high bearing capacity, and good economic performance.
Easy to process: Can be produced in fixed lengths, with pre-drilled holes in the web, and the installation speed on site is fast. Corrosion-resistant and durable: Heat-dip galvanizing or aluminized zinc treatment, suitable for outdoor humid or weakly corrosive environments.
Z-shaped steel section dimensions | |||||||
Model | H | B1 | B2 | C | T | Pitch distance |
|
Z100 | 100 | 55 | 50 | 20 | 2.0-3.0 | The hole spacing can be adjusted. | |
Z120 | 120 | 55 | 50 | 20 | 2.0-3.0 | ||
Z140 | 140 | 55 | 50 | 20 | 2.0-3.0 | ||
Z150 | 150 | 67 | 61 | 20 | 2.0-3.0 | ||
Z160 | 160 | 67 | 61 | 20 | 2.0-3.0 | ||
Z180 | 180 | 67 | 61 | 20 | 2.0-3.0 | ||
Z200 | 200 | 67 | 61 | 20 | 2.0-3.0 | ||
Z250 | 250 | 78 | 20 | 20 | 2.0-3.0 | ||
Z280 | 280 | 78 | 20 | 20 | 2.0-3.0 | ||
Z300 | 300 | 78 | 20 | 20 | 2.0-3.0 | ||
For other sizes, please contact us for customization. | |||||||
| Product Name | Galvanized Z Purlin |
| Category | Galvanized Steel |
| Zinc Coating Weight | 40g/m²-275g/m² (Both Sides) |
| Zinc Coating Type | Regular Spangle / Minimized Spangle / Spangle-Free |
| Size | Width:600mm-1500mm/Thickness:0.3mm-4mm(Customizable Sizes) |
| Surface Treatment | Hot Dip Galvanized /Customized |
| Colors | White, Blue, Red, Grey, Customized color |
| Application | Construction, Automotive, Appliances, Electrical Equipment, etc. |
| Corrosion Resistance | Excellent |
| Weather Resistance | Suitable for Outdoor Use |
| Certifications | ISO/ASTM/EN/GB/T |
| Processing Service | Welding, Punching, Cutting, Bending, Decoiling,Forming |
| Yield Strength | Q195/Q235/Q355/SD345/S350GD/S550GD/SGH440/Q355B,etc |
| Tolerance | 0.05 |
| Grade | DX51D/DX52D/DX53D/TDC51D/TDC52D/TDC53D/SGCC/CGCC/ZM/TS350GD/TS550GD |
| Place of Origin | CHINA |

Z-shaped steel is the preferred choice for continuous roof trusses of pitched roofs. It is suitable for large-span, sloped, and economically efficient lightweight steel structure roof systems. The core advantages are continuous stacking, reasonable load-bearing, and reduced steel usage.
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