Factory-direct steel gratings & stair treads, shipped worldwide
Galvanized Channel Grating
Handles storm water and truck wheels alike. Channel Grating built for real sites.
Itemized quote within 24 hours · Free drawing review included
Mesh to your water path
30 / 40 / 60 mm, or 11/11 mm close mesh
Hot-dip galvanized
ASTM A123 / ISO 1461, included in lead time
Samples in 5–7 days
Production in 15–25 working days
FOB Tianjin
Shipped worldwide, EXW / CIF negotiable
Grate choice by water path
Which Mesh Spacing Does Your Channel Need?
A channel grating has two jobs that pull in opposite directions: pass enough water at peak flow, and keep the debris out that would block the channel body. Water volume and debris size decide the mesh spacing; the traffic above the channel decides the bars underneath.
| Dimension | 30 mm centers | 40 mm centers | 60 mm centers | 11/11 mm close mesh |
|---|---|---|---|---|
| Water volume passed | High — general channel duty | High — the common yard and site choice | Very high — storm and culvert flows | Moderate — smaller catchment areas |
| Debris behavior | Passes grit, stops bottles and cans | Passes grit, stops bottles and cans | Passes coarse leaves and litter — channel must take them | Stops leaves, litter and cigarette ends |
| Best sited at | Driveways, aprons, yard channels | Commercial yards, kerb runs | Stormwater channels, culvert covers | Pedestrian precincts, footpaths, door thresholds |
| Foot traffic | Not heel-proof | Not heel-proof | Not heel-proof | Heel-proof openings |
| Typical build | Welded bar grating | Welded bar grating | Welded, heavier bars for wheel loads | Press-locked close-mesh panel |
Not sure which opening fits your flow? Tell us your water volume and debris load — we will spec the mesh inside the 24-hour quote.
From rainfall to outlet
Three Steps From Water Path to Grate Spec
1 · Water volume sets the mesh
Start at the outlet and work backwards: how much water the channel must move at peak, and how large the debris is. Big flows with coarse debris favor 40 or 60 mm openings; fine litter near footpaths points to 11/11 mm close mesh.
2 · Traffic sets the bars
Pedestrian channels run lighter bars; a channel crossing a delivery yard or driveway carries wheel loads, so bearing bars step up from 20×3 mm towards 100×8 mm and spans shorten. Tell us what rolls over it.
3 · Outdoor duty sets the finish
Channel grating sits in standing water, de-icing salt and freeze–thaw, so carbon steel panels go out hot-dip galvanized to ASTM A123 / ISO 1461 — a zinc coat over every bar and weld, with coating thickness checked by sampling before release.
Why specify galvanized
Why Specifiers Choose Galvanized Channel Grating From the Mill
High-flow channel grating
Open area you choose, not a fixed catalog slot — 30 / 40 / 60 mm openings for peak runoff, sized to the channel they cover rather than the other way round.
Heavy duty where wheels cross
Truck crossings get heavier bearing bars, shorter spans and banded edges — one-piece welded panels that spread wheel loads instead of rocking loose under traffic.
Built to last, batch tested
Hot-dip galvanized inside and out, with a mill test certificate to EN 10204 Type 3.1 on every heat and an inspection report with every shipment — certified & tested, reports on request.
Applications
Where Channel Drain Grates Work
Anywhere an open channel has to disappear under traffic — the grate is the only part anyone sees, and the only part that has to survive it.
Driveways & vehicle crossings
Wheel-rated panels for private drives, aprons and yard gates, sized to the channel width.
Pedestrian precincts & footpaths
11/11 mm close mesh keeps heels out and fine litter in view while the channel stays clear.
Industrial yards & loading docks
Wash-down channels under forklift routes — heavy bars, banded edges, close support spacing.
Stormwater channels & culverts
60 mm openings for peak flows on kerb runs, swales and culvert headwalls.
Specifications
Galvanized Channel Grating Specifications
| Parameter | Range |
|---|---|
| Bearing bar | 20×3 mm to 100×8 mm, plain or serrated |
| Bar spacing | 30 / 40 / 60 mm, or 11/11 mm close mesh |
| Panel width | Up to 1.25 m |
| Panel length | Up to 6 m, cut to channel runs |
| Edges | Banded and punched to drawings |
| Materials | Q235B carbon steel · SS304 / SS316 stainless |
| Surface | Hot-dip galvanized (ASTM A123 / ISO 1461) |
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. Galvanized channel grating leaves with documentation, not promises:
- Mill test certificate to EN 10204 Type 3.1
- Galvanized coating thickness checked by sampling on every batch
- Declaration of Conformity prepared per order destination
All hot-dip galvanized grating → · The welded panel process →
Load classes
EN 124 Load Class Guide for Channel Gratings
Class names referenced to EN 124, the European practice for gully tops and covers in carriageways. We produce to the class your site specifies and send the supporting inspection documents — no blanket certification claims.
| Class | Typical location | Typical panel direction |
|---|---|---|
| A15 | Pedestrian areas, gardens, precinct channels | Light bars at 30 mm or 11/11 mm close mesh |
| B125 | Footways, car parks, private driveways | Mid-range bars at 30 / 40 mm, banded edges |
| C250 | Kerb sides, loading bays, yard crossings | Heavier bars at 40 mm, shorter spans |
| D400 | Carriageways, truck routes, dock aprons | Heavy bars up to 100×8 mm at 40 / 60 mm, close supports |
Custom made
Channel Runs, Any Length, Cut and Banded to Your Drawings
Send your channel layout
Channel widths, run lengths, water volume, debris type and what crosses the grate — wheels, forks or feet. Drawing review is free.
Quote within 24 hours
Itemized, FOB Tianjin as standard — EXW or CIF on request. Small trial orders welcome, no middlemen in between.
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 Factory Quote
Send your channel grating layout for a factory quote — an itemized reply lands within 24 hours, free drawing review included.
- Mesh, bars and finish specified to your water path in writing
- DoC, MTC EN 10204 3.1 and inspection report with every order
- 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
What mesh spacing should channel drain grates use?
Match the opening to the water volume and debris the channel carries. 30 or 40 mm centers pass high stormwater flows, 60 mm suits heavy flows with coarse debris, and 11/11 mm close mesh stops leaves and litter — and keeps heels out — in pedestrian channels.
What is the lead time for galvanized channel grating?
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.
How is channel grating shipped and priced?
Shipped worldwide from Tianjin Port — FOB Tianjin as standard, EXW or CIF negotiable. Pricing is itemized per m² or per ton in your quote; we do not publish a fixed price list.
Related pages
Related Drainage Grating Pages
Galvanized Channel Drain
The channel body behind the grate, hot-dip galvanized for outdoor duty.
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Channel + grating + accessories specified as one drainage system.
View page →Metal Channel Drain
Fundamentals of metal channel drains and their grating options.
View page →Metal Drain Grating
The drain-grating line across every metal and finish.
View page →Steel Grid For Drainage
Grid geometry selection for drainage duty.
View page →Trench Grating
Linear trench grating for long covered runs.
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