Fiberglass Grating Manufacturer – FRP Molded & Pultruded Grating, Factory Direct Supply
FRP molded gratings are usually used as floors, marina walkway, roof walkway, tree guard, drain channel cover, ditch covers, work platforms, offshore platforms, decks, stair treads, fencing, etc.
And they are widely used in petroleum, water conservancy, textile printing and dyeing, food processing, electronics industry, sewage treatment, shipbuilding, civil construction, power engineering, power substations, and chemical industries.
Surface: smooth, concave, or covered with silica sand.
Color: green, gray, yellow, red, and customized.
Normal size of molded grating:
1220x4000mm, 1220x3660mm, 1220x2440mm, 915x3050mm, 1524x4000mm, 1247x4047mm and customized
The thickness of molded grating:
15mm, 20mm, 25mm, 30mm, 38mm, 40mm, 50mm, and customized.
Fiberglass Molded Grating vs Pultruded Grating – Which to Choose?
Fiberglass molded grating is manufactured by laying fiberglass rovings
in a bi-directional pattern within a mold, then infusing with resin under
heat and pressure. The result is equal strength in all directions — making
molded grating the preferred choice for platforms, walkways, and floor
applications where multi-directional load distribution matters.
Pultruded grating, by contrast, is formed by pulling continuous fiberglass
strands through a resin bath and die. Load strength is concentrated along
the pulling direction, making it suited to applications with defined span
directions such as trench covers and stair treads.
| Feature | Molded Grating | Pultruded Grating |
|---|---|---|
| Load direction | Bi-directional (equal all ways) | Uni-directional (along span) |
| Panel integrity | One-piece molded — no joints | Assembled from bars and crossbars |
| Open area | 30%–40% | 50%–70% |
| Best for | Platforms, floors, walkways, drain covers | Trench covers, stair treads, long-span applications |
| Custom mesh size | ✅ 25×25mm, 38×38mm, 50×50mm | ⚠️ Bar spacing adjustable |
Technical Specifications
| Parameter | Molded Grating | Pultruded Grating |
|---|---|---|
| Material | Fiberglass Reinforced Polymer (FRP/GRP) | |
| Resin System | Isophthalic / Vinyl Ester / Phenolic (optional) | |
| Standard Panel Size | 1220×3660mm, 1220×4000mm, 1524×4000mm | Custom length; width 25–300mm per bar |
| Thickness | 15 / 20 / 25 / 30 / 38 / 40 / 50mm | 25 / 38 / 50mm |
| Mesh Opening | 25×25mm, 38×38mm, 50×50mm (custom) | T-bar, I-bar profile |
| Open Area | ~30% – 40% | ~50% – 70% |
| Load Capacity | Up to 5,000 N/m² (varies by thickness) | Engineered to spec |
| Surface Finish | Smooth / Concave / Gritted (silica sand) | Smooth / Gritted |
| Colors | Green, Gray, Yellow, Red, Custom RAL | |
| Fire Rating | Fire retardant grade available (ASTM E84) | |
| MOQ | 10 panels; custom orders welcome | |
FRP Grating vs Steel Grating vs Aluminum
| Feature | FRP Grating | Steel Grating | Aluminum Grating |
|---|---|---|---|
| Weight | ✅ Very light (~3.5 kg/m²) | ❌ Heavy (~15 kg/m²) | ⚠️ Medium |
| Corrosion Resistance | ✅ Excellent | ❌ Rusts | ⚠️ Moderate |
| Electrical Conductivity | ✅ Non-conductive | ❌ Conductive | ❌ Conductive |
| Chemical Resistance | ✅ Excellent | ❌ Poor | ⚠️ Limited |
| Maintenance Cost | ✅ Near zero | ⚠️ Regular painting | ✅ Low |
| Slip Resistance | ✅ Gritted surface option | ⚠️ Limited | ⚠️ Limited |
| Service Life | ✅ 25+ years | ⚠️ 10–15 years | ⚠️ 15–20 years |
Features of fiberglass grating:
- High strength and light weight
- Corrosion-resistant
- Non-Conductive
- Fire Retardant
- UV Resistance
- Anti-aging and easy to maintenance
- Cost-effective and easy to install
The fiberglass molded gratings are produced by the molded grating machine. Gratings’ mesh size and height can be customized.
Fiberglass Floor Grating – Industrial & Commercial Applications
Fiberglass floor grating is one of the most common applications of FRP molded grating.
Compared with steel floor grating, FRP floor grating offers significant advantages in
corrosive, wet, or electrically sensitive environments.
Why Choose FRP Floor Grating?
- Slip-resistant surface: concave top or silica sand coating prevents
slips in wet industrial floors - Lightweight installation: at ~3.5 kg/m², FRP floor grating requires
no heavy lifting equipment - Corrosion-proof: ideal for chemical plants, food processing floors,
marine decks, and water treatment walkways - Non-conductive: safe for electrical substations and battery rooms
- Custom-cut panels: factory-cut to your floor dimensions with
pre-drilled fixing holes available
Common Floor Grating Specifications
| Application | Recommended Thickness | Mesh Size | Surface |
|---|---|---|---|
| Light pedestrian walkway | 25mm | 38×38mm | Concave / Gritted |
| Industrial work platform | 38mm | 25×25mm | Gritted |
| Chemical plant flooring | 38–50mm | 25×25mm | Gritted + Vinyl Ester resin |
| Marine deck / offshore | 50mm | 25×25mm | Gritted + UV-resistant |
| Water treatment facility | 25–38mm | 38×38mm | Smooth / Concave |
Fiberglass Drain Grates – Trench Covers & Channel Grating
Fiberglass drain grates outperform cast iron and steel in corrosive drainage
environments. Chemical plants, food processing facilities, and wastewater
treatment plants routinely replace metal drain covers with FRP grating panels
due to rust-free performance and significantly lower replacement frequency.
Drain Grate Specifications
| Parameter | Specification |
|---|---|
| Standard widths | 150mm, 200mm, 300mm, 400mm (custom) |
| Mesh opening | 25×25mm (standard drain); 38×38mm (light debris) |
| Thickness | 25mm (light duty); 38mm (standard industrial) |
| Surface | Gritted or concave — anti-slip rated |
| Load rating | Pedestrian to light vehicle (custom engineered) |
| Chemical resistance | Vinyl ester resin option for acid/alkali drainage |
| Cut-to-size | ✅ Factory cut to channel dimensions |
All drain grating panels are factory-cut to your channel dimensions
with optional fixing clips. Contact us with your trench width and depth
for a custom quote.
Application Of Fiberglass Grating
Catwalk
Deck Grating
Floor
Water Treatment
Platform
Fence
Drain & Trench
Walkway
Fiberglass Deck Grating – Marine & Offshore Applications
Fiberglass deck grating is the material of choice for marine platforms,
boat decks, offshore rigs, and pier walkways. Unlike steel grating, FRP deck
grating does not corrode in saltwater environments and requires no painting
or galvanizing — dramatically reducing lifetime maintenance costs on vessels
and offshore structures.
- Saltwater corrosion resistance: unaffected by chloride
exposure that destroys steel grating within 5–10 years - Non-sparking: critical for fuel storage decks and
hazardous area classifications - UV-stabilized resin: maintains structural integrity
under continuous direct sunlight exposure - Anti-slip surface: gritted finish rated for wet deck
conditions - Lightweight: ~3.5 kg/m² vs ~15 kg/m² for steel —
reduces vessel dead load
| Application | Recommended Spec | Key Requirement |
|---|---|---|
| Boat deck / marina walkway | 38mm, 25×25mm, gritted | Anti-slip + UV stable |
| Offshore platform deck | 50mm, 25×25mm, gritted + VE resin | Load bearing + chemical resistance |
| Pier walkway | 25–38mm, 38×38mm | Lightweight + saltwater resistant |
| Fish farm / aquaculture | 25mm, 38×38mm, smooth | Non-toxic, easy cleaning |
Fiberglass Grating Supplier – Factory Direct, B2B Wholesale
Wellco Industries is a factory-direct FRP fiberglass grating supplier serving
industrial buyers, EPC contractors, and distributors across the USA and globally.
We manufacture both molded and pultruded grating in-house, eliminating middlemen
and offering competitive wholesale pricing with consistent quality control.
Why Source FRP Grating Directly from Wellco?
- Factory direct pricing: no trading company markup – you buy
at manufacturer price - Custom manufacturing: panel size, mesh opening, thickness,
color, and resin system to your spec - OEM & private label: available for distributors and resellers
- Quality certification: products tested to ASTM standards;
fire retardant grades available (ASTM E84) - Bulk order capacity: suitable for large infrastructure,
industrial, and offshore projects - Samples available: request a physical sample before placing
your bulk order
How to Order – 4 Steps
| Step | Action | Timeline |
|---|---|---|
| 1. Submit inquiry | Fill in the contact form below with your size, quantity, and application | Same day |
| 2. Receive quote | We send a detailed quotation with pricing, lead time, and specs | Within 24 hours |
| 3. Sample approval | We ship a physical sample for your engineering review (optional) | 3–5 business days |
| 4. Production & delivery | Standard orders ship in 2–4 weeks; expedited options available | 14–28 days |
When evaluating fiberglass grating suppliers, buyers should verify
manufacturing capacity, OEM capabilities, and the availability of
third-party test documentation before placing bulk orders.