Factory-direct steel gratings & stair treads, shipped worldwide
Trench Grating
Handles storm water and truck wheels alike. Linear Grating built for real sites.
Cut to run lengths · Itemized quote within 24 hours · Free drawing review included
One factory, no middlemen
Grating runs produced and cut on our own lines
Certified & tested
Reports on request, MTC with every order
Samples in 5–7 days
Production in 15–25 working days
Shipped FOB Tianjin
Worldwide, EXW / CIF negotiable
The linear run
Trench Grating: One Continuous Line, Cut to Your Run Lengths
A trench grating run is a band of open steel grating laid continuously over a linear drain — panels produced in mill lengths, then cut to the exact straights, corners and outlets your layout needs. Some specifiers call the same product a linear floor grille; the duty is identical: let storm water in, keep wheels and feet out of the channel. Every run is sized in three moves — load class first, then bar spec and finish, then the cutting schedule.
| EN 124 class | Where the run sits | Typical grating spec |
|---|---|---|
| A15 | Pedestrian zones, cycle ways, landscaped strips | 20×3 to 25×3 mm bearing bars at 40 / 60 mm centers |
| B125 | Car parks, private driveways, footways | 25×3 to 32×5 mm bearing bars at 30 / 40 mm centers |
| C250 | Kerbside lanes, delivery yards, commercial aprons | 40×5 to 50×5 mm bearing bars at 30 / 40 mm centers |
| D400 | Carriageways, road crossings, dock aprons | 50×5 up to 100×8 mm bearing bars at 30 mm centers, banded ends |
Class locations are referenced to EN 124 — a public standard for gully tops and covers in vehicle-pedestrian areas. Panels are produced to your project loads; the confirmed bar schedule and load tables come with your quote.
Not sure which class your run needs? Send your trench layout — we will spec it inside the 24-hour quote.
Continuous-band production
From Mill-Length Panels to a Finished Trench Run
1 · Panels in mill lengths
Bearing bars and cross bars are electro-forged into single panels — the welded steel grating process — or press-locked for close-mesh strips. One solid band of steel, no joints that can loosen.
2 · Cut to run lengths, banded
The band is cut to your run schedule — straights, corner notches and outlet openings per drawing. Cut ends are banded flat so every panel edge that meets a channel wall keeps its strength.
3 · Finish, inspect, pack
Carbon steel runs go out black or hot-dip galvanized to ASTM A123 / ISO 1461 — typically 2–3 days at our partner plant, already counted inside your production window. Five-stage QC, then export-standard packing.
Why this trench grating line
Built for Real Sites, Not Catalog Pages
High-flow, self-clearing open area
The open mesh is the drain: storm water enters along the whole run instead of pooling at a single grate. Bar spacing of 30 / 40 / 60 mm is chosen with your debris load in mind, so the run keeps taking water year after year.
Truck wheels, not just rain
Bearing bars from 20×3 mm up to 100×8 mm take everything from foot traffic to D400 carriageway duty. Runs crossing traffic lanes get banded ends and closer centers — sized to the wheel load, confirmed in your quote.
Any length, made to spec
Factory-direct from Dengtai with no middlemen: send a layout or a sketch and the run is cut to it — wholesale quantities or a small trial section. Mill test certificate with every order.
Applications
Where Linear Trench Grating Runs Work
Anywhere water crosses a paved surface in a line rather than a point — that is a trench grating run. Four duties cover most projects:
Yards & forecourts
Long perimeter runs collecting storm water across hardstanding before it reaches a stormwater grid.
Kerbside & crossings
C250 / D400-duty runs at road edges and crossing points — banded edges sized to truck wheels. See also driveway drain grates.
Plants & washdown bays
SS304 / SS316 runs that shrug off washdown chemistry and spills — the stainless side of metal drain grating.
Plazas & podium decks
Pedestrian strips in close-mesh or press-locked formats — narrow openings, comfortable underfoot, neat straight lines.
Run specifications
Trench Grating Run Specifications
| Parameter | Range / options |
|---|---|
| Span across trench | Bearing bars span the channel, panel widths up to 1.25 m |
| Run panel length | Up to 6 m, cut to your run schedule |
| Bearing bar | 20×3 mm to 100×8 mm |
| Bar spacing | 30 / 40 / 60 mm centers |
| Profile | Plain, or serrated for wet and oily zones |
| Cross bar | Twisted square or round, per specification |
| Materials | Q235B carbon steel · SS304 / SS316 stainless |
| Surface | Black or hot-dip galvanized (ASTM A123 / ISO 1461) |
| Designations | 19W4-type and custom equivalents |
Materials & test documents
Every heat of Q235B, SS304 or SS316 enters production with its mill test certificate verified at goods-in — the first of our five QC stages. Runs leave with documentation, not promises:
- Mill test certificate to EN 10204 Type 3.1
- Factory inspection report with every shipment
- Declaration of Conformity prepared per order destination
Deeper on format choices: trench drain cover fundamentals · channel body + grating as one system · galvanized material options.
Standards & compliance
Produced to Recognized Standards — Documents on Request
EN 124 class context
Class selection referenced to EN 124; grating produced to your project loads, with the bar schedule confirmed per run in your quote.
ASTM A123 / ISO 1461 HDG
Galvanized coating thickness checked by sampling on every galvanized batch before a run is released.
CE & SGS tested
Certified & tested, reports on request — we show documents you can verify, not a certificate wall.
Cut to your run
Any Run Length, Banded and Finished to Your Drawings
Send your trench layout
Run lengths, channel widths, load class or vehicle type — or just photos and a sketch. Drawing review is free.
Quote within 24 hours
Itemized, FOB Tianjin as standard — EXW or CIF on request. Small trial orders welcome, wholesale runs priced per project.
Samples in 5–7 days, production in 15–25
Working days after drawing confirmation, hot-dip galvanizing included. Installation drawings and fixing layout ship with the order.
Factory-direct quote
Get a Trench Grating Quote
Send your linear grating layout for a factory quote — we reply within one business day, free drawing review included.
- Runs cut to length, banded, notched and finished to drawings
- Five-stage QC, from MTC verification at goods-in to final inspection
- Factory audits welcome — see the lines before you commit
Prefer to talk? WhatsApp us or sales@dtsteelladder.com
Request your quote
Five fields — we do the rest.
FAQ
Frequently Asked Questions
How fast can I get samples and production of a trench grating run?
Samples ship in 5–7 working days and mass production runs 15–25 working days after drawing confirmation, both including hot-dip galvanizing. Rush production in 10–15 days is possible with a surcharge — ask in your quote.
Is trench grating supplied galvanized?
Carbon steel runs are supplied black or hot-dip galvanized to ASTM A123 / ISO 1461 through a certified partner plant near our mill — galvanizing typically takes 2–3 days and is already counted inside the production window. SS304 and SS316 runs need no coating.
Do you accept small trial orders of trench grating?
Yes — small trial orders are welcome, ideal for a pilot section of a longer run. Pricing is itemized per m² or per ton in your quote, FOB Tianjin as standard; we do not publish a fixed price list.
Related pages
Related Drainage Grating Pages
Trench Drain Covers
Cover fundamentals: spans, locking options and edge details.
View page →Steel Trench Grating
The specification-table view of the same duty: bars, spans, designations.
View page →Metal Drain Grating
The wider metal drain grating range: grates, gullies and basins.
View page →Steel Trench Drain System
Complete system spec: channel body, grating, end caps and outlets.
View page →Metal Trench Drain
The channel under the grating — metal trench drain formats.
View page →Galvanized Channel Grating
Hot-dip galvanized channel grating for outdoor and civil duty.
View page →