Engineered Around Your Load & Span
Trench Cover Grating
Trench cover grating closes drainage channels and utility trenches with an open grid that admits surface water while carrying foot or vehicle traffic. From pedestrian walkways to heavy truck crossings, every cover is sized for its clear span and load — with banding, frames, hinges and locking options for safe inspection access.
- Pedestrian through heavy vehicle load classes
- High open area for drainage flow
- Angle / channel frames, hinged and lockable options
- Sized to clear span, load and support conditions
What is trench cover grating?
Trench cover grating spans drainage channels and utility trenches with an open grid that admits surface water while supporting foot or vehicle traffic. Covers are typically banded on all sides for edge stiffness and safe handling, and seat on embedded angle or channel frames.
Correct specification starts with the clear trench span and the traffic above: pedestrian covers use light sections, while driveway crossings need heavy-duty bars confirmed against wheel load, contact area, span and support conditions before quotation.
Hinged, lockable and lifting-key designs keep inspection and cleaning access practical without loose covers — tell us the opening size and access frequency and we will detail the arrangement.
Applications
Where Trench Cover Grating Is Used
Trench Covers & Drainage
Drainage covers that keep water moving and traffic safe — from pedestrian channels to truck crossings.
View application Trench Covers & Drainage
Drainage covers that keep water moving and traffic safe — from pedestrian channels to truck crossings.
View application
Industrial Flooring
Mezzanine and factory flooring that combines load capacity with light, air and sprinkler penetration.
View application
Industrial Platform Grating
Open-grid flooring for chemical plants, equipment platforms and mezzanines — strength, drainage and ventilation in one panel.
View applicationSpecifications
Specification Options
| Item | Options | Notes |
|---|---|---|
| Load class | Pedestrian / light vehicle / forklift / truck | Confirmed against clear span and wheel load before quotation |
| Bearing bar | 25 × 3 mm to 100 × 10 mm | Sized by clear span and load |
| Bearing bar spacing | 30 / 40 mm | 30 mm common for drainage covers |
| Banding | Flat bar banding on all sides; load banding for vehicle areas | Standard for stiffness and safe handling |
| Frame | Angle / channel frame, embedded or surface-mounted, with anchors | Supplied with covers as matched sets if required |
| Options | Hinged, lockable, lifting keys, lifting lugs | For inspection and cleaning access |
| Finish | Hot-dip galvanized / passivated stainless | Galvanized per ASTM A123 / ISO 1461 or customer standard |
| Panel limits | Up to 6100 × 1000/1200 mm; 70–100 kg per cover handling limit | Long trenches supplied as numbered cover runs |
Variants
Recommended Types
Pedestrian trench covers
Light sections for walkways, parks and building surroundings where only foot traffic applies.
Vehicle-rated trench covers
Heavy-duty bearing bars and load banding for forklifts and trucks — specified only after clear span, wheel load and support conditions are confirmed.
Hinged & lockable covers
Covers with hinges, locks and lifting keys for trenches that need regular cleaning or inspection.
Framed cover sets
Covers supplied together with angle or channel frames, including anchors for concrete embedment, detailed as matched sets.
Material for wet, buried service
Trench covers see a different exposure from an open platform because water, silt and debris can remain at the bearing seats and banded edges. For general rainwater drainage with regular wet-dry cycles, carbon steel can be a practical base material once the load section is confirmed. Continuously ponded water, trapped deposits and inaccessible buried edges need a more conservative corrosion review and a detail that lets the cover and frame drain.
Process drains need the liquid identified, not just the word “chemical.” Record concentration, temperature, cleaning chemicals and whether discharge is continuous or intermittent. Food and washdown areas may point to SS304 or SS316L, while chloride-bearing or more aggressive streams require the stainless grade to be checked against the actual media rather than selected from the site type alone.
Wastewater service may add hydrogen sulfide, condensation and low-oxygen deposits at the underside or frame seat. These conditions can attack hidden interfaces even when the top face looks dry. Review the cover, banding, hinges, fasteners and embedded frame as one exposure system, and keep clear-span and traffic calculations separate from the corrosion-material decision.
- Rainwater drainage: confirm wet-dry cycle, debris retention and access for cleaning
- Chemical drains: state media, concentration, temperature and discharge frequency
- Wastewater / H₂S exposure: review underside, frame seats, hinges and fasteners together
- Buried frames: avoid trapped water and verify the corrosion protection at hidden edges
- Choose Q235 or Q355 from load demand; choose the corrosion-resistant material from exposure
Fabrication & QC
Fabrication & Quality Notes
- Covers are banded on all four sides; vehicle-rated covers receive load banding matched to the wheel path.
- Frames, anchors and hinges are fabricated as matched sets with the covers and checked before finishing.
- Cover width and seat depth are verified against the clear trench span so covers seat without rocking.
- Load class is confirmed against clear span, wheel load and support conditions before production.
Packaging
Packaging & Delivery
- Covers stacked with spacers and strapped; frames bundled separately with matching tags.
- Each cover tagged by trench zone or chainage to match site installation sequence.
- Galvanized covers ventilated in packing to reduce wet-storage staining during sea freight.
Gallery
Trench Cover Grating in Detail
FAQ
Trench Cover Grating FAQs
Can trench covers carry trucks?
Do you supply the frames too?
Can covers be hinged for cleaning access?
What information is needed to quote trench covers?
Are the covers banded?
Can you match covers to existing frames?
What MOQ and lead time apply to matched trench-cover sets?
Send Your Drawings, Get a Confirmed Specification
Complete inquiries are typically answered within 24 hours during business hours.