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This project required approximately 30,000 meters of steel grating drainage channel covers for a large industrial site, used for long-distance drainage. The channels run along roads and equipment areas, so consistent panel sizes, structural stability, and durability were essential.
Unlike smaller projects, this system covered a wide area, including curved and irregular sections, which required high precision in design and installation.
The client emphasized several key requirements:
Panels must support passenger cars up to around 2 tons
Long-term outdoor use with reliable corrosion resistance
Standardized panel sizes for long drainage runs to simplify installation
Smooth transitions between curved and straight sections, avoiding gaps
Drainage channel width 500 mm, requiring accurate panel fit
The main challenge was ensuring load capacity and drainage performance while maintaining precise fit for non-standard sections and efficient installation.
| Parameter | Specification |
|---|---|
| Model | G505/30/100 |
| Bearing Bar Height | 50 mm |
| Bearing Bar Thickness | 5 mm |
| Bearing Bar Spacing | 30 mm |
| Cross Bar Material | Twisted Steel |
| Cross Bar Spacing | 100 mm |
| Maximum Load | Passenger cars up to approx. 2 tons |
| Channel Width / Span | 500 mm |
| Surface Treatment | Hot-Dip Galvanized |
| Application | Outdoor industrial drainage |
Based on the site layout, we took precise measurements for all curved and irregular sections and had them custom-fabricated.
Straight sections used standard sizes, ensuring reliable drainage and load performance while speeding up installation.
We optimized the joints and interfaces so that straight and curved sections fit together almost seamlessly. On site, installers only needed minor adjustments to assemble the panels.
This approach of customizing non-standard sections + standard straight sections ensured installation accuracy while controlling production and construction costs.
Before shipment, each panel had its galvanizing thickness measured and underwent a load test to ensure it could be installed directly on site without extra work.
Straight sections used standard sizes, while curved and irregular sections were prefabricated according to measurements.
Installers could quickly assemble the panels with minimal adjustments. Panels fit snugly into the channels, making the installation process smoother than expected.
When the first curved panel was placed into the channel, the on-site team was pleasantly surprised by how smoothly it fit. A few months later, water flowed smoothly, panels remained stable, with no gaps or rattling.
The client reported that passenger cars occasionally drove over the covers without issue, and routine inspections and maintenance were convenient.
Overall, the system has been running reliably, leaving both the construction team and the client satisfied.
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