Factory-direct steel gratings & stair treads, shipped worldwide
Stainless Floor Grating
Stainless Floor: every batch ships with traceable mill test certificates.
Itemized quote within 24 hours · Free drawing review included
Factory-direct, our own lines
3,000 ㎡ workshop · four product lines
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
Duty selection
Specify by Duty: Bar Size, Spacing, Grade
A stainless floor is chosen with three numbers — bearing bar section, bar spacing and grade — matched to the duty the floor actually sees, not to a catalog default. Here are the starting points we quote from.
| Floor duty | Bearing bar (mm) | Bar spacing (mm) | Grade | Spec notes |
|---|---|---|---|---|
| Pedestrian access | 25×3 to 32×5 | 30 / 40 | SS304 | Plain or serrated bars; standard open mesh, foot traffic only |
| Wet-process line | 32×5 to 40×5 | 30 / 40 | SS304 or SS316 | Closer centers keep heels and debris out; spills drop straight through |
| Heavy washdown | 40×5 to 60×5 | 30 / 40 | SS316 | Deeper bars for cart traffic; 60 mm centers where through-flow matters most |
Deeper bars carry more load across wider supports; closer centers keep the mesh heel-proof. Full range runs 20×3 mm to 100×8 mm — we confirm the final section against your drawings, and the review is free inside the 24-hour quote.
Between two duties? Send your drawings — we will spec it for the duty your floor actually sees.
Cleanability & drainage
Cleanability Is a Specification Decision
1 · Certified steel at goods-in
Every SS304 / SS316 heat is checked against its mill test certificate before a bar is cut — the first of five QC stages — so the floor you specify is the grade you receive.
2 · No coating to chip
Stainless needs no paint or galvanizing that can chip into a hygiene zone. Panels arrive cut and banded to your drawings, plain or serrated, with closed cut edges that leave no open bar ends.
3 · Welded in, drained through
Panels weld or clamp directly to support frames — no loose plates to trap soil — and the open mesh lets wash water fall into the channel below. Passivation is available on request; ask in your quote.
Drainage integration in one line: set bearing bars across the line of flow so spills drop straight into the channel or gully, and band every cut edge that meets a drain box. Matching covers are on the trench drain covers page.
Why stainless floors
Why Specifiers Choose Stainless Floor Grating
Corrosion resistance by grade, not by coating
SS304 for routine wet floors and daily washdown; SS316 where chlorides and cleaning chemicals are constant. The protection is in the steel — nothing to reapply after a hard season of washing.
Custom sections from small MOQ
Any bar from 20×3 mm to 100×8 mm at 30 / 40 / 60 mm centers, cut and banded to your drawings. Small trial orders are welcome — grade options included.
Mill certs with every batch
Heat numbers are traceable from goods-in to final inspection, and certificates can be previewed before you commit the order — ask in your quote.
Steel Grating Material Comparison
Not every wet floor needs stainless. Pick the row that matches your environment — this page covers the two stainless rows.
| Material | Corrosion behavior | Typical environments | Relative cost | Documentation |
|---|---|---|---|---|
| Q235B carbon steel | Needs a protective coating | Dry indoor platforms, warehouses | Lowest | MTC EN 10204 3.1 |
| Hot-dip galvanized Q235B | Zinc coating, ASTM A123 / ISO 1461 | Outdoor walkways, municipal trench | Low | MTC + coating thickness report |
| SS304 stainless | Rust-resistant in the alloy, no coating to chip | Food processing, daily washdown, general wet floors | Higher | MTC EN 10204 3.1 |
| SS316 stainless | Adds molybdenum for chloride duty | Marine, brine, chemical washdown | Highest | MTC EN 10204 3.1 |
Environment-first thinking instead of spec-first? The stainless steel floor grating page picks the material by the environment it must survive.
Applications
Duty-Matched Stainless Floor Applications
Each duty class below maps straight back to a row in the table above — the bar size, spacing and grade travel together.
Food & beverage wet floors
SS304 as standard; no coating that can chip into the process zone; wash water drains through the mesh.
Chemical & wet-process areas
SS316 for constant chlorides and aggressive cleaning chemicals; closer centers keep the mesh heel-proof.
Washdown platforms & mezzanines
Deeper 40×5 to 60×5 mm bars carry cart traffic; panels weld to the frame so nothing works loose under hosing.
Drainage & trench floors
Bearing bars across the flow line; cut-outs banded around drain boxes. See trench drain covers.
Specifications
Stainless Floor 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 on the press-locked route |
| Cross bar | Twisted square or round, per specification |
| Panel width | Up to 1.25 m |
| Panel length | Up to 6 m |
| Grades | SS304 / SS316 stainless steel |
| Integration | Welded or clamped to support frames; cut-outs banded at drain boxes |
| Surface treatment | Mill finish; passivation on request |
| Delivery docs | Installation drawings and fixing layout included |
Materials & test documents
Every heat of SS304 or SS316 enters production with its mill test certificate verified at goods-in — the first of our five QC stages. On the commercial side it is just as direct: we supply mill test certificates (EN 10204 Type 3.1) with every shipment.
- Heat numbers traceable from goods-in to final inspection
- 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
Welded stainless panels produced to MBG 531 reference practice, with weld joints inspected on the five-stage QC plan.
EN 10204 Type 3.1 MTC
Heat-traceable material proof: mill test certificates (EN 10204 Type 3.1) with every shipment, plus a DoC prepared per destination market.
CE & SGS tested
Certified & tested, reports on request — documents you can verify, not a certificate wall.
Custom made
Custom Sections, Cut and Banded to Your Drawings
Send your drawing
Duty class, panel sizes, 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. Installation drawings and fixing layout ship with the order.
Factory-direct quote
Get a Factory Quote
Send the duty class, panel sizes and quantities — an itemized quote lands within 24 hours, free drawing review included.
- Heat-traceable: mill test certificates (EN 10204 Type 3.1) with every shipment
- Bar section, spacing and grade confirmed against your drawings
- 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 stainless grade should I specify for my floor — SS304 or SS316?
SS304 handles routine wet floors and daily washdown in food and general processing. SS316 adds molybdenum for constant chlorides — salt spray, brine and aggressive cleaning chemicals. Both grades are traceable: we supply mill test certificates (EN 10204 Type 3.1) with every shipment.
What bar size and spacing suit pedestrian, wet-process and washdown floors?
Pedestrian access floors typically run 25×3 to 32×5 mm bearing bars at 30 / 40 mm centers. Wet-process floors move to 32×5 to 40×5 mm, and heavy washdown zones with cart traffic specify 40×5 to 60×5 mm. We confirm the final section against your drawings — review is free inside the 24-hour quote.
How fast can I get samples and production?
Samples ship in 5–7 working days and mass production runs 15–25 working days after drawing confirmation. FOB Tianjin is standard, with EXW or CIF negotiable, and small trial orders are welcome.
Related pages
Related Grating Pages
Stainless Steel Floor Grating
Environment-led companion: pick stainless by the conditions the floor must survive.
View page →Stainless Open Mesh Flooring
Drainage-through flooring for hygiene areas and wash zones.
View page →SS Grating
The full stainless line: grades, sections and finishes.
View page →Stainless Bar Grating
Bar-stock basics behind every stainless panel.
View page →316 Stainless Steel Grating
Grade deep-dive for chloride, marine and chemical duty.
View page →SS 304 Grating
Where 304 is enough — and where it is not.
View page →