Factory-direct steel gratings & stair treads, shipped worldwide
Offshore Grating
Safe, non-slip metal grate sidewalk for daily plant traffic, from one factory.
Itemized quote within 24 hours · Free drawing review included
Four product lines, one roof
Welded, press-locked, stainless and stair treads
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
Offshore panel choice
Choosing Offshore Grating for a Chloride Environment
Offshore duty is a corrosion question before it is a load question. Sea spray, salt fog and daily washdown attack steel and zinc at very different rates, so the exposure zone — not the price — should pick the panel. Here is the honest comparison.
| Offshore duty | Welded steel + heavy HDGAtmospheric zones | SS316 stainless gratingSplash & washdown | Press-locked close mesh |
|---|---|---|---|
| Construction | Every bearing-bar / cross-bar intersection resistance-forged, then hot-dip galvanized | Welded or press-locked panels in molybdenum-bearing SS316 | Cross bars pressed into notched bearing bars — no welds |
| Chloride behavior | Zinc is sacrificial — sound economics for topside, protected zones under a maintenance plan | Resists chloride pitting far better where spray, salt fog and washdown hit daily | Same materials as the welded routes; mesh geometry does not change corrosion duty |
| Wind & drainage | 30 / 40 / 60 mm centers — wind passes through, spray and rain fall straight down | Same open centers, and no coating that deck drainage can chip | Down to 11 / 11 mm where small items must not drop through, still drains |
| Surface option | Serrated or plain bearing bars under the galvanizing | Serrated or plain bearing bars, supplied to spec | Plain close mesh, flat underfoot |
| Typical duty | Topside walkways, dock and pier decks, module access routes | Splash-zone walkways, marine plant floors, washdown areas | Fine-mesh landings and pedestrian offshore walkways |
| Our lines | In-house — electro-forging line plus certified HDG partner | In-house — one of our four product lines | In-house — press-lock machine |
Not sure which exposure zone your drawings sit in? Send your drawings — we will spec it inside the 24-hour quote.
How offshore duty shapes the panel
Three Decisions That Make a Grating Panel Offshore-Suitable
1 · Open mesh for wind and deck drainage
Elevated offshore walkways catch wind, and sealed decks hold standing water. Open grating lets both pass straight through — no ponding on the walking surface, less sail area on the structure, and nothing pooling against the fixings.
2 · Serrated or plain surface
Serrated teeth on the bearing bars are the geometry that gives a wet, spray-washed deck its grip — specified as a design goal, not a test claim. Plain bars stay standard where trolleys or cradle rails roll across the walk.
3 · Finish matched to the exposure zone
Galvanized panels go to a certified galvanizing partner near our mill for ASTM A123 / ISO 1461 hot-dip galvanizing — typically 2–3 days, inside your production window. For splash zones, SS316 panels skip the coating question entirely.
Why specify offshore grating
Safe, Load-Rated Dock Grating Built to Last
Load-rated for daily traffic
One-piece forged panels spread foot, trolley and point loads across the full walk — offshore platforms, dock decks and the same daily plant traffic on land. Load tables are provided with your quote.
Open mesh that sheds the sea
Serrated or plain bearing bars over an open grid: spray drains through, wind passes through, and the walking surface stays visible and quick-drying — the same reasons plants cover their metal grate sidewalks in grating.
Custom sizes in bulk, with MTC 3.1
Dock grating in bulk or one replacement panel — cut and banded to your drawings, free drawing review inside the 24-hour quote, and a mill test certificate to EN 10204 Type 3.1 with every order.
Where offshore grating works
Platform and Walkway Duty on Offshore Structures
Anywhere steel flooring meets salt: walkways and platforms on offshore structures, the docks and jetties that service them, and the marine plant floors that rinse down every day.
Offshore platform walkways
Access routes and platform flooring on offshore structures — open mesh for wind, drainage and weight.
Dock, pier & jetty decks
Dock grating for quays and jetties — seawater drains through, not across, the walking surface.
Marine plant & washdown floors
SS316 floors for marine plant rooms and areas rinsed daily with salt or chlorinated water.
Sidewalks & service walks
The same metal grate sidewalk panels for daily plant traffic — vault covers, service routes, access walks.
Specifications
Offshore & Dock Grating Specifications
| Parameter | Range |
|---|---|
| Bearing bar | 20×3 mm to 100×8 mm, plain or serrated |
| Bar spacing | 30 / 40 / 60 mm centers |
| 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) |
| Panel edges | Banded and end-plated to your drawings |
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. Offshore and dock 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 531
Welded panels produced to MBG 531 reference practice, with weld 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 — we show documents you can verify, not a certificate wall.
An honest note on offshore class: classification-society approvals for offshore installations are not held as standing certificates — they are assessed and quoted per project. Name the approval regime your project works under in your RFQ and we will confirm exactly what we can support before you commit.
Custom made
Offshore Panels Made to Size, to Your Drawings
Send your drawing
Panel sizes, exposure zone, loads and 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. Bulk offshore orders and small trial orders both 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 an Offshore Grating Quote
Ask for an offshore grating quote today — an itemized reply lands within 24 hours, and samples ship in 5–7 days.
- 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 is the lead time for offshore 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.
Should offshore grating be SS316 or hot-dip galvanized steel?
It depends on the exposure zone. SS316 is the safer specification for splash zones and daily washdown, where chlorides attack a zinc coating fastest. Hot-dip galvanized Q235B is the economical route for protected, atmospheric zones under a maintenance plan — both carry an MTC to EN 10204 Type 3.1.
Do you hold offshore class society approvals?
No standing offshore class approvals are held — they are assessed and quoted per project. Tell us the approval regime your project works under and we will confirm what we can support before you order; MTC EN 10204 3.1, a factory inspection report and a Declaration of Conformity ship with every consignment.
Related pages
Related Walkway & Platform Pages
Steel Grating Platform
Platform and mezzanine floors — the structural side of the same duty.
View page →Stainless Steel Grating
The full stainless line — grades, formats and corrosion duty.
View page →316 Stainless Steel Grating
The molybdenum-bearing grade behind serious chloride exposure.
View page →Walkway Grating
The walkway line — panels for access routes across the plant.
View page →Heavy Duty Walkway Grating
Thicker bars and closer centers where loads, not chlorides, decide.
View page →Sidewalk Grating
Ground-level metal grate sidewalks over vaults and basements.
View page →