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The U-shaped track for photovoltaic (PV) mounting on corrugated steel roofs is a solar panel installation system specifically designed for corrugated steel roofs, widely used due to its high efficiency and reliability. It's called a "U-shaped track" because its cross-section resembles the letter "U," a design that ensures a balance between structural strength and ease of installation.
Color :
Natural silver/ black（Colored according to customer requirements）Certification :
ISO，SGS，CEMaterial :
Anodized Aluminum 6005 T5, Stainless Steel 304Product Origin :
Tianjin, FujianShipping Port :
Shanghai, Ningbo, Tianjin, Xiamen, Shenzhen ports
Product Description
The U-shaped track solar panel mounting system for corrugated steel roofs is a solar module installation system specifically designed for commercial, industrial, and residential corrugated steel roofs. Its core component—the U-shaped guide rail—has a U-shaped cross-section and is made of high-quality aluminum alloy. It is secured to the crests of the corrugated steel roof using special clamps or self-tapping screws, providing a stable support foundation for the photovoltaic modules. The system supports horizontal or vertical arrangement of photovoltaic modules and is compatible with both framed and frameless solar panels, demonstrating high flexibility.
Product Components
Advantages and disadvantages
▶ Advantages
▪ Easy Installation
The U-shaped track design simplifies the installation process. Self-tapping screws and pressure blocks secure the components, eliminating the need for complex tools and significantly saving installation time and labor costs.
▪ Lightweight Structure
Primarily constructed of aluminum alloy, the lightweight design minimizes additional load on the roof, facilitating transportation and handling.
▪ Reliable Waterproofing
When used with EPDM waterproof gaskets or adhesive, it effectively eliminates the risk of leakage after drilling into the roof, crucial for ensuring roof waterproofing performance.
▪ Wide Compatibility
The comprehensive system design supports horizontal or vertical arrangement of photovoltaic modules, compatible with most framed or frameless modules on the market.
▪ High Cost-Effectiveness
Fewer modules and a simplified installation process together reduce material and labor costs.
▶ Disadvantages
▪ Standardization Challenges
For reference, U-shaped tracks have a smaller moment of inertia and modulus, meaning their overall load-bearing capacity may be lower than tracks of other cross-sectional shapes for the same dimensions.
▪ Installation Limitations
Installation typically requires drilling holes in the corrugated steel roofing sheet. Despite waterproofing measures, this can still impact the overall roof structure.
▪ Market Maturity
As a specialized solution, U-shaped tracks may not have the same market penetration and price transparency as more versatile C- or Z-shaped steel.
▪ Material Properties
Aluminum is weaker than steel. In special applications requiring extremely high load-bearing capacity, more robust hot-dip galvanized steel U-shaped supports may be necessary.
Parameters
| Installation | Metal Roof |
| Wind Load | up to 60m/s |
| Snow Load | 1.4kn/m² |
| Tilt Angle | Parallel to Roof Surface |
| Component Orientation | Horizontal/vertical, flexible arrangement |
| Applicable components | Compatible with framed and frameless photovoltaic modules |
| Standards | GB50009-2012, EN1990:2002, ASCE7-05, AS/NZS1170, JIS C8955:2017, GB50429-2007 |
| Material | Anodized Aluminum AL6005-T5, Stainless Steel SUS304 |
| Warranty | 10 Years Warranty |
Applicable Scenarios
U-shaped track systems are primarily used for corrugated steel roofs, covering various types:
▪ Commercial buildings
Such as factories, warehouses, and logistics centers, which typically have large roof areas and regular installation conditions, making them ideal for leveraging the cost-effectiveness of U-shaped tracks.
▪ Industrial plants
These buildings have high requirements for roof waterproofing and structural load-bearing capacity; the lightweight and waterproof characteristics of U-shaped tracks perfectly meet these needs.
▪ Residential buildings
Especially suitable for rural self-built houses or villas using corrugated steel roofs, U-shaped tracks are also a good choice.
▪ Specific roof types
Particularly suitable for trapezoidal corrugated steel roofs, as their U-shaped design allows for a better fit with the corrugated steel sheets.
Important Notes:
To ensure the long-term stable operation of the system, several key points require special attention:
▶ Design and Planning Stage
▪ Pre-calculate Roof Load Capacity
Before installation, ensure the roof structure can withstand the additional load from the photovoltaic system.
▪ Precise Layout and Positioning
Before installation, lay out the lines according to the design drawings to ensure the spacing between the clamps and guide rails meets design requirements.
▶ Waterproofing Stage (Crucial)
▪ EPDM Gaskets Must Be Used
All holes that damage the original corrugated steel roofing must have EPDM waterproof gaskets or washers installed under the self-tapping screws. It is recommended to use waterproof sealant to prevent leaks.
▶ Construction and Installation Stage
▪ Standardized Operation Sequence
Guide rail installation should follow the sequence of "middle section → end sections → guide rail connectors."
▪ Control Installation Accuracy
After each guide rail is installed, check its levelness. The bending angle per span should not exceed 1mm to ensure even stress distribution on the components.
▪ Ensure Clamp Tensile Strength
Before batch installation, perform a tensile pull-out test on clamp samples to ensure a secure connection to the roof.
▪ Construction access must be provided
Direct stepping on the roof slabs is strictly prohibited. Dedicated access paths should be laid to prevent roof deformation or leaks due to foot traffic.
▪ Construction is strictly prohibited on rainy days
This is to prevent rainwater from seeping into incompletely sealed joints, which could cause safety hazards.
Summary
The U-shaped track for photovoltaic (PV) brackets on corrugated steel roofs is an installation solution designed specifically for the structural characteristics of corrugated steel roofs. It combines the lightweight nature of aluminum alloy, the waterproof reliability of EPDM, and the convenience of modular design, effectively controlling costs while prioritizing construction efficiency and system lifespan. For homeowners planning PV projects on corrugated steel roofs, choosing such a clearly structured and standardized system is a pragmatic move to ensure long-term stable returns.
Solar First Project Reference
Related Knowledge Points
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