Factory-direct steel gratings & stair treads, shipped worldwide
Heavy Duty Grating
Built for forklift traffic and heavy loads. Welded or press-locked, your choice.
Itemized quote within 24 hours · Free drawing review included
In-house weld & press lines
Electro-forging and press-locking under one roof
Certified & tested
Reports on request, MTC with every order
Samples in 5–7 days
Production in 15–25 working days
FOB Tianjin
Shipped worldwide, EXW / CIF negotiable
The duty ladder
What Heavy Duty Grating Actually Means
Heavy duty is not a sticker on a quotation — it is a set of changes to the panel. As traffic climbs from foot to trolley to forklift, three things move together: the bearing bar section, the bar centers, and how the span is handled. Here is the ladder, and where our real manufacturing range sits on it.
| What changes | Pedestrian duty | Industrial duty | Heavy duty |
|---|---|---|---|
| Traffic it is built for | Foot traffic, occasional light carts | Hand trolleys, pallet trucks, steady foot traffic | Forklifts, delivery trucks, crane set-downs |
| Bearing bar section | Smaller sections of our 20×3 mm to 100×8 mm range | Mid-range sections of the same range | Toward the top of the range — up to 100×8 mm |
| Bar centers | 60 mm centers are usually enough | 30 / 40 mm centers tighten the mesh | 30 / 40 mm centers, matched to the wheel footprint |
| Span handling | Longer clear spans carry light loads | Spans checked against rolling loads | Spans kept short, bearing bars run with the traffic direction |
| Load framing | Uniform foot load and a person's point load | Rolling light wheels plus stacked goods | Concentrated wheel loads with braking and turning forces |
| Typical use | Walkways, catwalks, roof paths | Plant floors, mezzanines, platform decking | Forklift aisles, dock approaches, roadway trench covers |
Not sure where your project sits on the ladder? Send your drawings — we will spec it inside the 24-hour quote. Load and deflection tables for your exact span and bar selection are provided with your quote, not guessed from a generic chart.
Heavy-duty family: bar construction · welded / electro-forged · steel floor · mild steel Q235B · stainless SS304 / SS316
How duty is built in
Three Changes That Make a Panel Heavy Duty
1 · Bar section grows first
Depth and thickness of the bearing bar are the primary levers. Heavy duty steel grating is built toward the top of our 20×3 mm to 100×8 mm range, so the same footprint of panel simply contains more steel where the wheel lands.
2 · Spans shorten and align
Under a wheel, span is the enemy. Heavy duty panels keep clear spans short, add intermediate supports where drawings allow, and run the bearing bars in the direction of traffic so every wheel crosses several bars at once.
3 · Edges and fixings lock it down
Banded edges close the cut ends of the bars so wheels cannot peel a bar loose, and a fixing layout ships with every order — clip fixings are sourced companion items we supply alongside the panels.
Why specify heavy duty from us
Why Buyers Order Heavy Duty Steel Grating From Dengtai
High load that holds
Bar sections up to 100×8 mm on 30 / 40 mm centers carry forklift traffic without permanent set — heavy duty metal grating sized to your span and wheel, not guessed. Load test data available per batch.
Long-life surfaces
Hot-dip galvanized to ASTM A123 / ISO 1461 for outdoor docks and roadway covers, or SS304 / SS316 stainless where washdown and chlorides attack carbon steel — coating thickness checked on every galvanized batch.
Built by drawing, with MTC
Custom heavy duty panels cut and banded to your drawings in Q235B or stainless — free drawing review, itemized FOB Tianjin quote, and a mill test certificate to EN 10204 Type 3.1 with every order.
Applications
Where Heavy Duty Grating Works
Anywhere wheels meet steel flooring: the same open mesh that sheds water and debris, upgraded to bar sections and spans that take concentrated wheel loads day after day.
Forklift aisles & docks
Warehouse aisles, dock approaches and apron slabs where trucks turn and brake.
Heavy plant platforms
Machine platforms and mezzanines carrying equipment, skids and stored loads.
Roadway & driveway covers
Trench and drainage covers at kerbs, yard gates and crossing points under wheel loads.
Heavy-traffic stairs
Stair treads and access stairs in the same duty class, serrated or plain, with nosing.
Specifications
Heavy Duty Grating Specifications
| Parameter | Range |
|---|---|
| Bearing bar | 20×3 mm to 100×8 mm — heavy duty builds toward 100×8 mm |
| Bar centers | 30 / 40 / 60 mm |
| 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) |
| Reference practice | ANSI / NAAMM MBG 532-24, produced to |
Load and deflection tables for your span, bar section and centers are provided with your quote — our engineers size the panel against your wheel load or uniformly distributed load.
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. Heavy duty 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 532-24
Heavy duty grating produced to the MBG 532 reference practice, with weld-point 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 — load test data available per batch. We show documents you can verify, not a certificate wall.
Custom made
Heavy Duty Grating by Drawing — Cut and Banded
Send your drawing
Panel sizes, clear spans, wheel loads or uniform loads, 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 before a full program.
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.
Send drawings for a heavy-duty quote — reply within 24 hours, samples in 5–7 days.
Factory-direct quote
Get a Factory Quote
Send drawings for a heavy-duty quote — reply within 24 hours, samples in 5–7 days. Free drawing review included.
- Five-stage QC, from MTC verification at goods-in to final inspection
- 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 makes a grating heavy duty?
Duty is a combination of bearing bar section, bar centers and clear span — not a marketing label. As traffic moves from foot to trolley to forklift, we move up the 20×3 mm to 100×8 mm bar range, tighten centers to 30 / 40 mm and shorten or re-orient spans so the bars carry the wheel load. Send your load data and we confirm the selection in the 24-hour quote.
Welded or press-locked — which suits heavy loads?
Both are made in-house. Electro-forged welded grating is the default for wheel loads and wide spans because every bearing-bar / cross-bar intersection is pressure-forged into one panel; press-locked panels suit dense, uniform loads and close mesh. Tell us the traffic and the span and we recommend one in your quote.
What is the lead time for heavy duty 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.
Related pages
The Heavy-Duty Family & Related Spec Pages
Heavy-Duty Bar Grating
The bar-construction view — sections, centers and banding choices.
View page →Heavy-Duty Welded Grating
Electro-forged panels for wheel loads and wide clear spans.
View page →Heavy-Duty Steel Floor Grating
The floor-application view — plant floors, aisles and dock slabs.
View page →Heavy-Duty Mild Steel Grating
Q235B mild steel heavy duty — the standard carbon-steel route.
View page →Heavy-Duty Stainless Steel Grating
SS304 / SS316 heavy duty for corrosive and washdown plants.
View page →Light Duty Grating
The pedestrian end of the same duty ladder — foot traffic only.
View page →