Factory-direct steel gratings & stair treads, shipped worldwide
Steel Grating
Gratings, stair treads & trench covers from one factory. Everything for your project.
Itemized quote within 24 hours · Free drawing review included
Four lines, one factory
Welded, press-locked, stair treads and stainless under one roof
Certified & tested
Reports on request, MTC EN 10204 3.1 with every order
Samples in 5–7 days
Production in 15–25 working days
FOB Tianjin
About 400 km to port, shipped worldwide
The category core
What Is Steel Grating? Four Lines, One Factory
Steel grating is an open-mesh flooring panel: parallel bearing bars carry the load, cross bars lock them into a grid, and the open area sheds water, ice and debris. Buyers specify it as metal grating, steel metal grating, bar grating or grating mesh — the panel behind the names is the same. Dengtai builds it in four lines, all factory-direct:
Welded line
Pressure-forged bearing and cross bars — the load-span workhorse for platforms, walkways, trench covers and guardrails.
Welded steel grating →Press-locked line
Flat bars interlocked under pressure — perfectly flat, close mesh down to 11/11 mm for trench, tree pits and facades.
Press-locked grating →Stair treads line
Grating panels fabricated into treads — banded ends, end plates and plain or serrated nosing for industrial and escape stairs.
Grating stair treads →Stainless line
The same bar construction in SS304 / SS316 — corrosion-proof platforms and drainage for food, chemical and marine duty.
Stainless steel grating →Compare the lines
Which Steel Grating Line Fits Your Project
One factory, four construction routes. The forming method decides load behavior and mesh density; the material decides where the panel may serve. Here is the honest side-by-side:
| Dimension | Welded | Press-Locked | Stair Treads | Stainless |
|---|---|---|---|---|
| Forming principle | Every bearing-bar / cross-bar intersection resistance-forged under pressure | Cross bars pressed into notched bearing bars — no welding heat | Welded or press-locked panels cut, banded and drilled into treads | Welded construction in SS304 / SS316 bar stock |
| Load behavior | High load capacity at wide spans; joints cannot work loose | Very uniform load distribution; suited to pedestrian traffic | Rated tread spans with anti-slip nosing | Same spans as carbon steel with corrosion resistance |
| Mesh range | 30 / 40 / 60 mm centers | Down to 11 / 11 mm close mesh — heel-proof | Standard tread spacings, serrated or plain surface | 30 / 40 / 60 mm centers |
| Materials | Q235B, hot-dip galvanized after forming | Q235B, galvanized or mill finish | Q235B with checker or serrated nosing plate | SS304 / SS316, no coating needed |
| Typical use | Platforms, walkways, trench covers, guardrails | Municipal trench, tree pits, facades, fine floors | Industrial stairs, escape stairs, access platforms | Food, chemical and marine platforms and drainage |
| Inside the factory | In-house — electro-forging line | In-house — press-lock machine | Fabricated on our own lines, bended and packaged for export | In-house — same bars, stainless stock |
Not sure which line fits your loads? Send your drawings — we will spec it inside the 24-hour quote.
Why buy at the mill
Why Buyers Order Steel Grating Factory-Direct
Mill-direct, in bulk or small MOQ
A factory outlet, not a trading desk: FOB Tianjin pricing quoted by tonnage, custom sizes from small MOQ, and an itemized quote within 24 hours — free.
Built to last, serrated or plain
Anti-slip performance is a surface choice: serrated bearing bars bite into wet or oily soles, plain bars keep trolleys rolling smooth. Both are built to last in Q235B or stainless.
SS304 & Q235B, MTC 3.1 included
Certified & tested, reports on request: every order ships with a mill test certificate to EN 10204 3.1, a factory inspection report and a Declaration of Conformity for your market.
Applications
Where Steel Grating Gets Specified
Open mesh that carries loads while shedding rain, spills and debris — the default surface wherever people, wheels or drainage meet a steel floor.
Platforms & walkways
Load-rated flooring for plant platforms, mezzanines and maintenance walkways.
Trench & drainage covers
Covers for trench drains, gullies and catch basins — heel-proof close mesh optional.
Stair treads & guardrails
Treads with serrated or plain surfaces and matching guardrail infill panels.
Corrosive & food duty
SS304 / SS316 flooring and drainage for chemical, food and marine plants.
Specifications
Steel Grating Specifications
| Parameter | Range |
|---|---|
| Bearing bar | 20×3 mm to 100×8 mm, plain or serrated |
| Bar spacing | 30 / 40 / 60 mm centers; 11/11 mm close mesh |
| Cross bar | Twisted square or round, per specification |
| Panel width | Up to 1.25 m |
| Panel length | Up to 6 m |
| Materials | Q235B carbon steel · SS304 / SS316 stainless |
| Surface | Black or hot-dip galvanized (ASTM A123 / ISO 1461) |
| Stock designation | 19W4 and custom equivalents |
| Product lines | Welded · press-locked · stair treads · stainless |
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. Panels 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
Standards & compliance
Produced to Recognized Standards — Documents on Request
ANSI / NAAMM MBG 531
Grating produced to MBG 531 reference practice, with weld inspection on our five-stage QC plan.
ASTM A123 / ISO 1461 HDG
Galvanized coating thickness checked by sampling on every galvanized batch before panels are released.
CE & SGS tested
Certified & tested, reports on request — we show documents you can verify, not a certificate wall.
Custom made
Steel Grating Made to Your Drawings
Send your drawing
Panel sizes, load specs, quantities — 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.
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 on Steel Grating
Request a quote and hold a sample in 5–7 days. Our engineers reply within 24 hours.
- All four lines quoted from one factory — one vendor, one loading plan
- 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
Steel Grating FAQ
Do you accept small orders of steel grating?
Yes — small trial orders are welcome, with custom sizes available from small MOQ on every order. Full-container volumes are calculated per loading plan, so you only pay for the steel you ship.
How fast are samples and production?
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.
Should I order black or hot-dip galvanized steel grating?
For outdoor or wet service, hot-dip galvanizing to ASTM A123 / ISO 1461 is the default, applied by a certified partner near our mill and already counted inside the production window. Black panels suit indoor or painted service; SS304 / SS316 stainless needs no coating at all.
Related pages
Related Category Pages
Bar Grating
Bearing bars plus cross bars — 19W4 designations and load tables on request.
View page →Floor Grating
Flooring duty: load direction, deflection and open-mesh drainage.
View page →Grating Mesh
Mesh geometry: 30/40/60 mm centers and the 11/11 close-mesh option.
View page →Steel Grating Mesh
Which spacing suits which load, heel and drainage duty.
View page →Structural Grating
Structural-grade framing for heavy-duty and platform construction.
View page →Steel Grating Plate
Plate-style panels: closer mesh, banded edges, tread applications.
View page →