Factory-direct steel gratings & stair treads, shipped worldwide
Grated Metal Floor
Metal floor: serrated or plain surface, cut to size, made to order.
Itemized quote within 24 hours · Free drawing review included
Factory-direct floors
In-house weld and press lines, no trading desk between
Certified & tested
Reports on request · MTC EN 10204 3.1 with every shipment
Samples in 5–7 days
Production in 15–25 working days, small trial orders welcome
FOB Tianjin
Shipped worldwide, EXW / CIF negotiable
Duty classes
Choose the Floor by What Crosses It
A grated metal floor is specified from two decisions: how heavy the traffic is, and whether the surface runs plain or serrated. Bearing bars from 20×3 mm to 100×8 mm cover everything from an inspection catwalk to a forklift aisle — the table below shows typical selections within that range.
| Duty class | What crosses it | Bearing bar, typical | Surface choice | Bar centers |
|---|---|---|---|---|
| Light pedestrian | Inspection routes, roof walkways, catwalks | 20×3 – 30×3 mm | Plain is usually enough indoors | 30 / 40 / 60 mm |
| Standard plant | Daily foot traffic, handcarts, tool trolleys | 40×4 – 50×5 mm | Plain for dry aisles, serrated at doors and wash points | 30 / 40 mm |
| Heavy wheel | Forklifts, pallet trucks, drum routes | 60×5 – 100×8 mm | Serrated recommended — grip under load | 30 mm and closer on request |
Typical selections, not a substitute for engineering — load tables are available on request, and heavier specs such as heavy-duty grating follow the same production lines.
Know your spans but not your bar size? Send your drawings — we will spec it inside the 24-hour quote.
How the floor comes together
From Duty Survey to Installed Floor
1 · Read the duty, not the catalog
Bearing bars carry the load and must sit perpendicular to traffic, spanning between supports. Fix the duty class first — bar size, centers and panel thickness all follow from it.
2 · Plain or serrated surface
The same panel, two top edges. Serrations are cut into the bearing bar itself, so the anti-slip performance does not wear off like a coating — it is part of the section.
3 · Cut, band, finish
Panels are cut to your openings and banded on the ends, then hot-dip galvanized to ASTM A123 / ISO 1461 at a certified partner plant — typically 2–3 days, already counted inside your production window.
Why specify grated
Why Maintenance Teams Specify a Grated Metal Floor
Anti-slip when the floor fights back
Washdown, oil mist and outdoor rain are where solid plate fails. A serrated grated metal floor sheds liquids through the mesh and keeps grip underfoot — an engineered anti-slip surface, not an additive.
Sized to the duty, made to order
From a light pedestrian catwalk to a heavy wheel loading route, every panel is cut to size and banded to your drawings — replacements for worn plant floors included. Drawing review is free.
Samples in 5–7 days, small MOQ
Order a sample panel first and check the surface and fit on your own supports — small trial orders are welcome before you commit a whole mezzanine or aisle.
Applications
Where a Grated Metal Floor Earns Its Keep
A metal grating floor lets wash water, dust and spills drop through instead of pooling on the walking surface — the reason plants keep specifying it where housekeeping and grip matter most.
Maintenance platforms
Light-duty floors for pumps, valves and conveyor lines — fast to cut around obstructions.
Plant aisles & mezzanines
Standard-duty floors for daily foot traffic and handcarts, sized panel by panel to your bay grid.
Wet & washdown areas
Serrated floors for food, chemical and process zones where water runs every shift.
Pits, trenches & access
Heavy wheel covers over machine pits, plus matching stair treads for the same order.
Specifications
Grated Metal Floor Specifications
| Parameter | Range |
|---|---|
| Bearing bar | 20×3 mm to 100×8 mm, plain or serrated |
| Bar spacing | 30 / 40 / 60 mm centers, closer mesh on request |
| 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 | Plain or serrated; black or hot-dip galvanized (ASTM A123 / ISO 1461) |
| Custom sizes | Cut and banded to your drawings |
Materials & test documents
Floors carry people, so paper matters. We ship mill test certificates (EN 10204 Type 3.1) with every shipment, verified heat by heat at goods-in — the first of our five QC stages. Panels leave with documentation, not promises:
- Mill test certificates (EN 10204 Type 3.1) with every shipment
- Factory inspection report with every order
- Declaration of Conformity prepared per order destination
Standards & compliance
Produced to Recognized Standards — Documents on Request
ANSI / NAAMM MBG 531
Floor panels produced to MBG 531 reference practice, with weld inspection built into our five-stage QC plan.
ASTM A123 / ISO 1461 HDG
Galvanized coating thickness checked by sampling on every galvanized batch before floor panels are released.
CE & SGS tested
Certified & tested, reports on request — we show documents you can verify, not a certificate wall.
Custom made
Replacement Floors, Cut and Banded to Your Drawings
Send your drawing or the old panel
Panel sizes, duty class, quantities — or a photo of the worn floor with two measurements. 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
Get a factory quote in 24 hours — grated metal floor panels, stair treads and trench covers in one order.
- 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
Which bearing bar size does my plant floor need?
Match the bar to what crosses the floor: light pedestrian routes are typically served by 25×3 to 30×3 mm bearing bars, daily plant traffic by 40×4 to 50×5 mm, and forklift or heavy wheel duty by 60×5 up to 100×8 mm bars. These are typical selections — send your spans and wheel loads and we will confirm from load tables, free, inside the 24-hour quote.
Should I choose a plain or serrated surface?
Plain surfaces sweep clean and run quieter under smooth-wheeled carts, so they suit dry aisles and storage mezzanines. Serrated surfaces keep grip when the floor is wet, oily or greasy, which is why washdown areas, machine pits and outdoor stairs usually get serrated. Both surfaces are available on every duty class, in carbon or stainless steel.
What are the lead time and minimum order for a grated metal floor?
Samples ship in 5–7 working days and production runs 15–25 working days after drawing confirmation, hot-dip galvanizing included. Small trial orders are welcome — useful when you are validating a replacement floor panel before a full rollout.
Related pages
Related Grating Pages
Floor Grating
Flooring fundamentals: load direction, deflection and open-mesh drainage.
View page →Metal Grid Floor
Open-grid drainage flooring for wet and process areas.
View page →Grated Floor Panel
Panel-level decisions: span versus deflection, walkway vs platform duty.
View page →Mesh Flooring Panel
Mesh spacing choices by traffic level and drainage needs.
View page →Metal Mesh Grating
Mesh in other metals — stainless for corrosion zones, galvanized for weather.
View page →Steel Grating
The category core: all four Dengtai lines and where each is specified.
View page →