Products Description
Our galvanized steel grating trench cover is engineered as a heavy-duty drainage solution for outdoor, industrial and commercial drainage systems. Fabricated by pressure-welding flat steel and twisted cross bars, then hot-dip galvanized for long-term corrosion resistance. This framed grating drain cover features a solid surrounding frame, stable structure, high load capacity, excellent water passing rate, anti-slip surface and easy installation & maintenance. It is widely used for road gutters, sidewalk drainage, factory walkways, parking lots, sewage treatment plants and municipal engineering projects.
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Key Features
High Load-Bearing Performance
Pressure-welded integral grid structure, uniform force distribution. Available in multiple load grades to meet pedestrian, light vehicle and heavy truck load requirements, compliant with EN124 load standards.
01
Superior Anti-Corrosion Treatment
Hot-dip galvanized finish creates a tight zinc protective layer, resisting rust, moisture and chemical erosion. Service life can reach 20–30 years under normal outdoor conditions.
02
High Open Area for Efficient Drainage
Large void ratio ensures rapid rainwater runoff, effectively preventing water accumulation on roads and yards while blocking large debris.
03
Framed Integrated Structure
Matching steel frame makes positioning easier, prevents shifting after installation, reduces noise from vehicle rolling, and supports removable design for quick channel inspection and cleaning.
04
Technical Specifications
| Material | Carbon steel Q235 |
| Surface Finish | Hot dip galvanized (HDG) |
| Bearing bar | 25×3mm, 30×3mm, 32×5mm, 40×5mm, etc. |
| Pitch | 30mm / 40mm / 60mm bearing bar spacing; 50mm cross bar spacing |
| Load Class | B125, C250, D400 (EN124) |
| Standard Frame | Angle steel / rectangular tube frame |
| Customization | Length, width, anti-theft lock, lifting lugs available on request |
Products Description
- Municipal road drainage trenches, sidewalk gutter systems
- Factory workshop drainage, platform walkway grating
- Commercial parking lot, warehouse drainage channels
- Sewage treatment, water treatment plant trench covers
- Garden, park, residential community drainage projects
- Logistics yard, loading area heavy-duty drainage
Why Choose SND Steel Grating Trench Cover?
We are a professional manufacturer specializing in steel grating products. Strict raw material inspection, automated welding production line and standardized galvanizing process guarantee stable quality. We provide one-stop service including drawing confirmation, production, packaging and shipping. Compared with cast iron covers, our steel grating drain cover has lighter weight, lower cost, better drainage and no theft risk, becoming a cost-effective alternative for municipal and industrial drainage projects.
FAQ
Q: What is the difference between framed steel grating and unframed grating?
A: Framed grating comes with a supporting steel border. It fits perfectly into the pre-set trench opening, will not move or tilt when vehicles pass, and reduces vibration noise. Unframed grating is usually placed directly on two side supports, more suitable for simple temporary drainage.
Q: How long does hot-dip galvanized steel grating last outdoors?
A: Under normal atmospheric environment, the hot-dip galvanized layer can provide 20–30 years of anti-rust protection. If used in coastal salt spray or strong corrosive environment, we can recommend 304 stainless steel grating as an upgrade option.
Q: Can you produce custom sizes and special load grades?
A: Yes. We accept fully customized orders. You can send us your trench inner size, required load standard and drawing, and our technical team will work out the suitable grating solution for you.
Q: Is this grating cover anti-theft?
A: Standard version does not include anti-theft devices. We can add anti-theft bolts or locking structures upon request to prevent unauthorized removal.
Q: What is your lead time and trade terms?
A: Normally 7–15 working days for bulk orders. We support FOB, CIF, EXW, DDP and other trade terms, and we can arrange container loading for sea shipment.
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