Factory-direct steel gratings & stair treads, shipped worldwide
SS 304 Grating
SS304 Grating: every batch ships with traceable mill test certificates.
Itemized quote within 24 hours · Free drawing review included
SS304 & SS316 lines
Welded or press-locked, custom to drawings
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
Steel grating material comparison
Q235B, HDG, SS 304 or SS 316?
Material choice follows the environment. SS 304 — the highlighted row — is the grade that covers most wet-duty floors without paying for marine alloy; every other row links to its own material page.
| Material | Corrosion behavior | Typical environment | Relative cost | Docs & delivery |
|---|---|---|---|---|
| Carbon steel Q235B | Needs paint or zinc to resist rust | Dry indoor platforms, warehouse floors | Baseline of the four | MTC EN 10204 3.1 with every shipment |
| Hot-dip galvanized | Zinc coating protects the steel beneath | Outdoor walkways, trench covers, municipal drainage | Moderate | MTC + HDG via certified partner, 2–3 days |
| SS 304 | Corrosion-resistant with no coating at all | Washdown areas, food-adjacent zones, general outdoor | Higher | MTC EN 10204 3.1 per heat — samples 5–7 days |
| SS 316 | Adds chloride resistance for salt service | Marine, dock, coastal, chemical exposure | Highest | MTC EN 10204 3.1 per heat — samples 5–7 days |
Not sure which material survives your site? Send your drawings — we will spec it inside the 24-hour quote.
Where SS 304 stops being the right grade
SS 304 carries most corrosion duty until chlorides enter the picture — coastal air, docks, brine tanks or heavy de-icing salt are the point where it can pit. That is the job of 316 Stainless Steel Grating. Describe the duty in your RFQ and we will recommend the grade, honestly — including when 304 is simply enough.
Construction options
SS 304, Built Two Ways
The grade stays the same; the construction follows your floor. Both lines run in our own workshop, on the same drawings and the same heat traceability.
1 · Electro-forged welded
Every bearing-bar / cross-bar intersection pressure-forged in one pass — the default SS 304 construction for platforms, walkways and trench covers at 30 / 40 / 60 mm centers. See the welded line →
2 · Press-locked close mesh
Cross bars pressed into notched bars — no weld heat, perfectly flat panels, mesh down to 11 / 11 mm for heel-proof hygiene floors. See press-locked grating →
3 · Inspected & packed for export
Five-stage QC ends with weld-point inspection and a final release report. Panels leave steel-strapped on export pallets for the roughly 400 km run to Tianjin Port.
Why specify 304
Why SS 304 Is the Default Stainless Grade
SS 304 is the common 18/8 austenitic grade — the workhorse of stainless flooring. If your duty is wet but not salty, it is almost always enough grade.
Rust-resistant, coating-free
As an austenitic stainless, 304 resists corrosion in fresh water, humidity and daily washdown without paint or zinc — and there is no recoating cycle to budget for, ever.
Made to spec, any size
Panels cut and banded to your drawings from small MOQ — bearing bars, spacing and panel dimensions all specified by you, with free drawing review inside the 24-hour quote.
Heavy-duty options included
The same 304 grade runs with bearing bars up to 100×8 mm for wheel and plant traffic — load tables on request with your quote, serrated top optional for wet grip.
Where 304 is enough
Where SS 304 Grating Is Enough
Four duty classes cover the great majority of SS 304 floors. If your site sits in one of these, you rarely need to pay for a higher alloy.
Indoor washdown areas
Daily hose-down floors in plants and packing lines — open mesh drains the water through instead of pooling it.
Food-adjacent zones
Corrosion-resistant, cleanable surfaces for food-adjacent processing and wash areas where painted steel cannot be specified.
General outdoor duty
Rain, humidity and freeze–thaw away from the coast — outdoor platforms, walkways and stair treads without salt spray.
Wet & freshwater plant areas
Damp process floors, tank surrounds and fresh-water channels — wet service with no chlorides in the water.
Stainless floor duty in food & chemical plants → · All application pages →
Specifications
SS 304 Grating Specifications
| Parameter | Range |
|---|---|
| Grade | SS304 — 18/8 austenitic stainless |
| Bearing bar | 20×3 mm to 100×8 mm, plain or serrated |
| Bar spacing (welded) | 30 / 40 / 60 mm centers |
| Close mesh (press-locked) | Down to 11 / 11 mm |
| Panel width | Up to 1.25 m |
| Panel length | Up to 6 m |
| Surface | Mill finish — no coating required |
| Upgrade path | SS316 for marine / chloride duty |
Materials & test documents
Every heat of SS304 (or SS316, if you upgrade) 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, one per heat
- Factory inspection report with every shipment
- Declaration of Conformity prepared per order destination
Material evidence
Mill Test Certificates (EN 10204 Type 3.1)
We provide mill test certificates (EN 10204 Type 3.1) with every shipment, so the grade on your drawing is the grade in your panel — traced heat by heat, from the steel mill to the container.
One certificate per heat
SS 304 bars are bought by heat number, and each heat's certificate is checked at goods-in — the first stage of our five-stage QC plan, before a single bar is cut.
What the certificate states
Grade, heat number and the mill's reported chemical and mechanical values — the document your inspectors and hygiene auditors ask to see.
Ready to preview
Certified & tested, reports on request — ask in your RFQ and we will preview the exact certificate wording alongside your quote, before you commit.
Custom made
Custom SS 304 Panels, Cut and Banded to Your Drawings
Send your drawing
Panel sizes, bar spacing, quantities, duty conditions — 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, grade options included.
Samples in 5–7 days, production in 15–25
Working days after drawing confirmation — and no coating cycle to add, since SS 304 ships in mill finish. Installation drawings and fixing layout ship with the order.
Factory-direct quote
Get a Factory Quote
Send your SS 304 grating specs for a factory quote — certs ready to preview. Itemized pricing lands within 24 hours, free drawing review included.
- Five-stage QC, from MTC verification at goods-in to final inspection
- Mill test certificates (EN 10204 Type 3.1) with every shipment
- 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
Is SS 304 grating enough for outdoor use?
Yes, for general outdoor duty away from coastlines — platforms, walkways and stair treads that see rain, humidity and wash-down splash. Near the sea, on docks or over brine, step up to SS 316: chloride exposure is where 304 can pit.
How do mill test certificates work for SS 304 grating?
We provide mill test certificates (EN 10204 Type 3.1) with every shipment. Each certificate traces the heat number behind your panels and the mill's reported chemical and mechanical values, and it is verified at goods-in before a single bar is cut.
Can I get SS 304 grating welded or press-locked?
Both. Welded panels run on our electro-forging line at 30 / 40 / 60 mm centers; press-locked panels go down to 11 / 11 mm close mesh with no weld heat. Samples of either ship in 5–7 working days.
Related pages
Related Stainless Grating Pages
316 Stainless Steel Grating
Chloride duty: marine, dock and chemical exposure where 304 stops being enough.
View page →SS Grating
The full stainless line — both grades, welded or press-locked.
View page →Stainless Grating
The 304 vs 316 selection guide, environment by environment.
View page →Stainless Bar Grating
Bar construction in stainless, including close-mesh press-locked panels.
View page →Stainless Steel Floor Grating
Food-plant and chemical floors with drainage-through mesh.
View page →Stainless Floor Grating
Spec-led floor page: loads, spans and cleanability in stainless.
View page →