Grating for Marine & Offshore Environments
Shipyards, container terminals, jetties, and offshore platforms put grating to work in one of the harshest environments in industry. GoGrating fabricates marine grating for deck walkways, dock gangways, trench drain covers, pump-room floors, mooring areas, and access platforms — every panel made to order against your project drawings, factory-direct from Anping, Hebei. Because marine structures rarely call for standard rectangles, we cut, notch, and band each panel to fit hatches, pipe penetrations, and curved platform edges before it ships.
Whether you are an EPC contractor outfitting a new quay, a procurement engineer specifying replacement panels for a vessel or rig, or a distributor supplying dock hardware, the starting point is the same: tell us the environment, the span, and the load case, and we will recommend a material and bar section from our steel grating or FRP grating lines. Browse all applications to see the other industries we serve.
Marine Grating Challenges
Chloride-laden salt spray is the defining problem. Uncoated carbon steel corrodes many times faster at the coast than inland, and the splash zone — wetted and dried with every tide or wave — is more aggressive still than the marine atmosphere above it. For grating, that means surface treatment and material selection matter as much as the bar section itself: a heavy hot-dip galvanized coating, a molybdenum-bearing stainless grade, or a corrosion-immune FRP laminate, chosen zone by zone.
The second constant is slip. Decks and gangways are routinely wet with seawater, diesel, hydraulic oil, and algae growth, so marine projects almost always specify serrated bearing bars on steel grating or grit-top surfaces on FRP. Added to that are weight limits on vessels and gangways, impact from dropped equipment, and open areas that must shed water fast so standing spray never pools underfoot.
Recommended Products
Hot-dip galvanized steel grating is the workhorse for quaysides, shipyard ground floors, and atmospheric-zone platforms. We weld bearing bars from 20x3 mm up to 100x9 mm in 19-space and 15-space series, then galvanize to ASTM A123, which ties minimum zinc thickness to the steel section — heavier bars carry heavier coatings. Serrated bars are the usual marine choice, and panels are banded all round to seal cut edges. See the full range on our steel grating page.
FRP grating is our recommendation for the splash zone, seawater intake areas, desalination plants, and anywhere galvanic corrosion or weight is a concern. Molded FRP grating in vinyl ester resin offers the strongest chemical and seawater resistance, isophthalic resin suits general marine duty, and pultruded profiles handle longer spans. Covered (plated) and grit-top options add slip resistance, and FRP needs no hot work to install on a live terminal. Details are on the FRP grating page.
Stainless steel grating in grade 304 or 316 serves vessel decks, food-handling ports, and architectural marine work where coatings are unwanted. For direct seawater exposure we recommend 316, whose molybdenum content resists chloride pitting far better than 304. Stainless panels are fabricated to the same bar ranges and pitches as carbon steel and can be supplied pickled and passivated.
Marine Specifications
GoGrating manufactures to YB/T 4001.1 and ANSI/NAAMM MBG 531, with hot-dip galvanizing to ASTM A123 under an ISO 9001 quality system; CE-marked supply is available for European projects. Coating performance can be verified by neutral salt spray testing to ASTM B117 / ISO 9227, with test duration agreed per project, and galvanizing thickness reports are issued against the A123 thickness classes. For slip resistance, we supply serrated steel grating per MBG 531 practice and grit-top FRP grating commonly assessed against DIN 51130 ramp ratings — confirm the rating class your specification requires and we will match the surface.
We never publish generic load figures: spans, bar sections, and safety factors are engineered per project. Send your drawings, deck plans, or CAD files via Request a Quote and our engineers will return a panel layout, material recommendation, and load table for review.
- Hot-dip galvanized to ASTM A123 for atmospheric marine zones
- Stainless 304/316 grating — 316 recommended for chloride splash zones
- Molded and pultruded FRP in orthophthalic, isophthalic, and vinyl ester resins
- Serrated bars and grit-top surfaces for wet-deck slip resistance
- Panels cut, notched, banded, and curved to your drawings
- ISO 9001 factory in Anping; CE-marked supply available
Frequently Asked Questions
Which grating should I use in the splash zone versus on open decks?
For the splash zone and seawater intakes we usually recommend FRP grating in vinyl ester resin, since it cannot rust and needs no recoating. For atmospheric-zone decks, quaysides, and shipyard floors, hot-dip galvanized steel to ASTM A123 is the economical standard, with stainless 316 reserved for direct seawater contact where coatings are unwanted.
Can you fabricate marine grating to our project drawings?
Yes — that is our standard workflow. Send DWG/DXF, PDF drawings, or deck plans through our Request a Quote page and we will return a panel layout with cutouts, notches, banding, kick plates, and fixing clips included. Curved and tapered panels for hull-side and circular platforms are also fabricated to order.
What is the typical MOQ and lead time for export orders?
Because every order is custom-fabricated, there is no fixed SKU minimum — we quote per project, though container-load quantities give the best freight economics. Typical production lead time is several weeks depending on panel count, surface treatment, and testing requirements; we confirm a firm schedule with each quotation.
What standards and test documentation do you provide?
We manufacture to YB/T 4001.1 and ANSI/NAAMM MBG 531, galvanize to ASTM A123, and operate under ISO 9001 with CE-marked supply available. On request we provide mill certificates, zinc coating thickness reports, salt spray test results to ASTM B117/ISO 9227, and engineered load tables for your specified spans.