Factory-direct steel gratings & stair treads, shipped worldwide
Stainless Bar Grating
SS Bar Grating: every batch ships with traceable mill test certificates.
SS304 / SS316 · Welded or press-locked close mesh · Itemized quote within 24 hours
In-house weld & press lines
Welded and press-locked stainless panels under one roof
Certified & tested
Mill test certificates (EN 10204 Type 3.1) with every shipment
Samples in 5–7 days
Production in 15–25 working days
FOB Tianjin
Shipped worldwide, EXW / CIF negotiable
Construction comparison
Bar Construction in Stainless: Welded or Press-Locked
Stainless bar grating starts with the same bearing-bar and cross-bar anatomy as carbon bar grating — then the grade and the joint decide everything. Both constructions below run in SS304 and SS316 in our own workshop, including the press-locked close mesh that hygiene floors usually require.
| Dimension | Welded SS Bar Grating | Press-Locked SS Close Mesh | HDG Carbon Bar Grating |
|---|---|---|---|
| Forming principle | Every bearing-bar / cross-bar intersection resistance-forged under pressure | Cross bars mechanically pressed into notched bearing bars — no weld heat | Same welded anatomy in Q235B, then hot-dip galvanized |
| Mesh range | 30 / 40 / 60 mm centers | Down to 11 / 11 mm close mesh | 30 / 40 / 60 mm centers |
| Load behavior | High load capacity at wide spans; joints cannot work loose | Uniform load spread; fine bars held firm — heel-proof openings | High load capacity; coating protects the steel |
| Corrosion duty | SS304 general corrosion duty; SS316 for chlorides | Same grades, closer mesh — nothing small falls through | Weather protection from the zinc layer, not the grade |
| Typical use | Washdown platforms, plant walkways, trench covers | Hygiene floors, food and beverage lines, fine drainage | Outdoor walkways, municipal trench, weather-exposed decks |
| Our lines | In-house — electro-forging line | In-house — press-lock machine | In-house welding + certified HDG partner nearby |
Not sure which construction fits your floor loads? Send your drawings — we will spec it inside the 24-hour quote.
How panels are made
From SS Bars to Certified Panels
1 · Grade-verified bar stock
SS304 or SS316 flat bars, plain or serrated, from 20×3 mm to 100×8 mm. Every incoming heat is checked against its mill test certificate at goods-in — the first of our five QC stages.
2 · Weld or press-lock
Open-mesh panels are resistance-forged in one pass; close-mesh panels go to the press-lock machine for 11 / 11 mm centers with no weld heat — flat, clean joints that trap no soil.
3 · Inspection & documents
Final visual check on every panel, then the paper trail: factory inspection report and mill test certificates (EN 10204 Type 3.1) with every shipment, heat-traceable to your grade.
Why specify stainless bar
Why Buyers Specify Stainless Bar Grating
Rust-resistant by grade, not by coating
Corrosion resistance lives in the SS304 or SS316 itself — there is no zinc layer to scratch off in washdown areas. SS316 is the chloride answer for marine and chemical zones.
Mill cert on every batch
We ship mill test certificates (EN 10204 Type 3.1) with every shipment, so the SS304 / SS316 you specified is the grade in the crate. Certificates can be previewed before you commit.
Any size, made to spec
19W4-style designations or fully custom dimensions, light pedestrian duty to heavy-duty bar sections — cut and banded to your drawings, from small trial orders upward.
Applications
Where Stainless Bar Grating Works
Bar construction carries the load; the stainless grade survives the environment. These are the duty zones where the combination earns its keep.
Food & beverage floors
Hygiene flooring that hoses down daily — press-locked 11 / 11 mm close mesh keeps small items on the surface.
Chemical & washdown areas
Spill-through open mesh around process lines; SS316 where cleaning chemicals and chlorides attack coatings.
Marine & coastal platforms
SS316 bar grating for chloride-heavy salt air — access platforms, gangways and dock drainage.
Stainless drainage & trench
Corrosion-resistant trench covers over floor drains — close mesh keeps heels safe while liquids pass through.
Specifications
Stainless Bar Grating Specifications
| Parameter | Range |
|---|---|
| Grades | SS304 · SS316, heat-traceable |
| Bearing bar | 20×3 mm to 100×8 mm, plain or serrated |
| Bar spacing — welded | 30 / 40 / 60 mm centers |
| Bar spacing — press-locked | Close mesh down to 11 / 11 mm |
| Panel width | Up to 1.25 m |
| Panel length | Up to 6 m |
| Surface | Plain or serrated anti-slip bars |
| Designations | 19W4 and custom equivalents |
Mill Test Certificates (EN 10204 3.1)
Stainless orders include mill test certificates (EN 10204 Type 3.1) with every shipment — heat numbers on the certificate match the grade in the panels. Panels leave with documentation, not promises:
- MTC to EN 10204 Type 3.1 for SS304 / SS316 heats
- Factory inspection report with every shipment
- Declaration of Conformity prepared per order destination
Steel Grating Material Comparison
Stainless bar grating is the right answer in wet and corrosive duty zones — and the wrong place to overspend elsewhere. Compare the four materials we build before you commit.
| Material | Corrosion resistance | Typical environment | Relative material cost | Documents |
|---|---|---|---|---|
| Q235B carbon steel | None without coating | Dry indoor floors, budget platforms | Lowest | MTC per heat |
| Hot-dip galvanized Q235B | Rust-resistant zinc layer | Outdoor walkways, municipal trench | Moderate | MTC + coating check per batch |
| SS304 stainless | Corrosion-resistant across the grade | Food plants, washdown, general wet sites | Higher | MTC EN 10204 3.1 |
| SS316 stainless | Corrosion-resistant, chloride duty | Marine, coastal, chemical processing | Highest | MTC EN 10204 3.1 |
Torn between grades? Send the environment you are flooring for — we will recommend one inside the 24-hour quote.
Standards & compliance
Produced to Recognized Standards — Documents on Request
ANSI / NAAMM MBG 531
Bar grating produced to MBG 531 reference practice, with joint inspection on our five-stage QC plan.
EN 10204 Type 3.1 MTC
Mill test certificates (EN 10204 Type 3.1) with every shipment — grade and heat traceable for SS304 and SS316 orders.
CE & SGS tested
Certified & tested, reports on request — we show documents you can verify, not a certificate wall.
Custom made
Any Grade, Any Size — Cut and Banded to Your Drawings
Send your drawing
Grade (SS304 / SS316), panel sizes, mesh spacing, 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, no middlemen.
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 your SS bar grating specs — grade, bar sizes, spacing, quantities — for a factory quote. Material certs are ready to preview before you commit.
- Mill test certificates (EN 10204 Type 3.1) with every shipment
- Five-stage QC, from MTC verification at goods-in to final inspection
- Factory audits welcome — see the weld and press 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
How are mill test certificates issued for stainless bar grating?
Stainless bar grating orders include mill test certificates (EN 10204 Type 3.1) with every shipment — each certificate traces the heat number and the SS304 or SS316 grade you ordered. Material certificates can be previewed before your order ships.
SS304 or SS316 — which grade should I choose?
SS304 covers general corrosion duty: food plants, indoor washdown areas and most industrial floors. SS316 adds molybdenum for chloride environments — marine, coastal and chemical processing. Both grades run in our stainless line, so the choice follows your environment, not our stock list.
Can I order close-mesh stainless bar grating and small trial quantities?
Yes. Press-locked close mesh down to 11/11 mm is made in-house for hygiene and heel-proof floors, and small trial orders are welcome. Samples ship in 5–7 working days; production runs 15–25 working days after drawing confirmation.
Related pages
Related Grating Pages
SS Grating
The full stainless line — SS304 / SS316 across every panel format.
View page →Bar Grating
The bar-construction parent page — anatomy, 19W4, load tables.
View page →Stainless Steel Floor Grating
Application-led floors for food, chemical and washdown zones.
View page →SS 304 Grating
The 304 grade page — where it is enough, where it is not.
View page →316 Stainless Steel Grating
Marine and chloride duty — the SS316 grade page.
View page →Galvanized Bar Grating
Same bar construction in HDG carbon steel for dry outdoor duty.
View page →