ZeAllgrate FRP Molded Grating
ZeAllgrate FRP Molded Grating
As a leading fiberglass grating manufacturer and FRP grating supplier, ZeAllgrate molded grating is manufactured in a compression molding process that interlocks continuous glass fibers in two directions — also known as GRP grating, GFRP grating, composite grating, fiberglass reinforced plastic grating or glass reinforced plastic grating — delivering exceptional bi-directional strength and impact resistance. It is the world's most widely specified FRP grate, GRP grate and composite grating — and ours is engineered for the harshest service conditions.
- Bi-directional strength: equal load capacity in both panel directions
- Anti-slip surfaces: concave/convex, grit-top (silica) options
- 3+ resin systems: isophthalic, vinyl ester, phenolic, fire-retardant
- FRP grating panel (GRP grating panel, fiberglass grating panel) sizes up to 1220 × 3660 mm; thickness 25 / 30 / 38 / 40 / 50 mm
- Non-conductive, non-magnetic, spark-resistant
- Service life 20+ years with zero maintenance in corrosive service
Technical Data
| Standard FRP grating panel | 1220 × 3660 mm (4' × 12') |
| Thickness | 25 / 30 / 38 / 40 / 50 mm |
| Mesh Pitch | 38×38 / 40×40 / 50×50 mm |
| Glass Content | 33% ± 3% (molded) |
| Surface | Concave / Convex / Grit-top |
| Resin Systems | ISO Polyester / Vinyl Ester / Phenolic / Fire-Retardant |
| Colors | Green, Gray, Yellow, Red, Blue, Custom |
| Load Test | Per ASTM E84, ISO 14122 |
Product Drawings & Details
Dimensioned drawings for specification and fabrication — matching the technical documentation of leading FRP manufacturers.
Full Specification Matrix
Standard stocked configurations covering mesh, thickness, FRP grating panel, GRP grating panel and fiberglass grating panel sizes and unit weights. Custom configurations available on request.
| Thickness | Mesh Pattern | FRP grating panel Sizes (m) | Open Area | Weight (kg/m²) |
|---|---|---|---|---|
| 25.4 mm | 38.1 × 38.1 mm square | 0.91 × 3.05 / 1.22 × 3.66 | 70% | 12.7 |
| 25.4 mm | 25.4 × 101.6 mm rectangular | 0.91 × 3.05 / 1.22 × 3.66 | 69% | 13.7 |
| 38.1 mm | 38.1 × 38.1 mm square | 0.91 × 3.05 / 1.52 × 3.05 / 1.22 × 3.66 / 1.52 × 3.66 | 70% | 18.6 |
| 38.1 mm | Mini-Mesh 19.05 × 19.05 top, 38.1 × 38.1 bottom | 1.22 × 3.66 | 44% | 22.0 |
| 50.8 mm | 50.8 × 50.8 mm square | 1.22 × 3.66 | 72% | 19.5 |
| 25.4 mm | Micro-Mesh 19.05 × 19.05 top, 38.1 × 38.1 bottom | 1.22 × 3.66 | 44% | 14.2 |
| 38.1 mm | HLC 25.4 × 50.8 mm rectangular | 1.22 × 3.66 | 48% | 30.3 |
| 50.8 mm | HLC 25.4 × 50.8 mm rectangular | 1.22 × 3.66 | 48% | 41.0 |
Values are standard industry configurations. Certified load/span charts and test reports provided with every order.
Load & Span Reference Table
Indicative allowable loads by span. Verify final design against certified load charts for your exact configuration.
| Span | CL 25 mm | CL 38 mm | CL 50 mm | UDL 25 mm | UDL 38 mm | UDL 50 mm |
|---|---|---|---|---|---|---|
| 460 mm | 412 kgf | 564 kgf | 1,161 kgf | 2,600 kgf/m² | 3,400 kgf/m² | 5,200 kgf/m² |
| 610 mm | 240 kgf | 377 kgf | 732 kgf | 1,900 kgf/m² | 2,500 kgf/m² | 3,800 kgf/m² |
| 915 mm | 120 kgf | 167 kgf | 341 kgf | 900 kgf/m² | 1,200 kgf/m² | 1,900 kgf/m² |
| 1220 mm | 60 kgf | 92 kgf | 197 kgf | 480 kgf/m² | 640 kgf/m² | 1,000 kgf/m² |
Physical & Mechanical Properties
Typical values tested in accordance with ASTM methods on production FRP grating panels (GRP grating panels, fiberglass grating panels). Certified test reports available on request.
| Property | Value | Test Method |
|---|---|---|
| Tensile Strength | 70 MPa | ASTM D638 |
| Flexural Strength | 110 MPa | ASTM D790 |
| Compressive Strength | 170 MPa | ASTM D695 |
| Flexural Modulus | 8 GPa | ASTM D790 |
| Density | 1.7 g/cm³ | ASTM D792 |
| Water Absorption (24h) | < 0.5% | ASTM D570 |
| Barcol Hardness | 40 – 50 | ASTM D2583 |
| Flame Spread | ≤ 25 (Class A) | ASTM E84 |
Section Properties per Unit Width
Area (A), moment of inertia (I) and section modulus (S) per metre of panel width — for structural design of platforms and walkways.
| Configuration | Depth | Mesh | A (mm²/m) | I (×10⁶ mm⁴/m) | S (×10³ mm³/m) |
|---|---|---|---|---|---|
| Std 25.4 | 25.4 mm | 38.1 × 38.1 sq | 3.62 × 10³ | 0.191 | 15.6 |
| Std 25.4 R | 25.4 mm | 25.4 × 101.6 rect | 5.44 × 10³ | 0.300 | 23.1 |
| Std 38.1 | 38.1 mm | 38.1 × 38.1 sq | 6.03 × 10³ | 0.696 | 34.9 |
| Mini-Mesh 38.1 | 38.1 mm | 19.05 / 38.1 | 7.98 × 10³ | 0.975 | 42.6 |
| Std 50.8 | 50.8 mm | 50.8 × 50.8 sq | 6.09 × 10³ | 1.311 | 50.5 |
Indicative design values. Structural design should be verified by a qualified engineer against certified section data for the exact resin and configuration.
In Production & In the Field
Real photographs from our manufacturing facility and installed projects.
See How ZeAllgrate Is Made
Compression molding & pultrusion lines at our Qidong facility — ISO 9001:2015 certified.
Engineered to International Standards
ASTM E84
Surface burning characteristics for fire-retardant grades — Class A/Class B options.
ISO 14122
Permanent means of access to machinery — platform, walkway and stair requirements.
AS 1657
Fixed platforms, walkways, stairways and ladders — design, construction and testing.
OSHA 1910
Walking-working surfaces and fall protection compliance for industrial installations.
Material certificates, load test reports and compliance documentation shipped with every order. Certified: ISO 9001:2015 · DNV & ABS Marine · SGS & Intertek. View certifications →
Options for Every Environment
| Surface | Best For | Anti-Slip |
|---|---|---|
| Concave / Convex | General industrial walkways, platforms | Standard molded profile |
| Grit-Top (Silica) | Wet, oily and chemical process areas | High — embedded silica grit |
| Micro-Mesh | Public access, ADA-compliant small openings | High — small mesh profile |
| Meniscus | Light pedestrian traffic, aesthetics | Moderate — meniscus surface |
Standard colors: Green (RAL 6010), Gray (RAL 7047), Yellow (RAL 1003), Red, Blue, Black — custom Pantone/RAL matching available.
Chemical Resistance Reference
Indicative chemical resistance by resin system — the basis of every material selection. Always confirm the final recommendation against our certified chemical resistance guide for your specific media, concentration and temperature.
| Chemical Medium | ISO Polyester | Vinyl Ester | Phenolic | Service Notes |
|---|---|---|---|---|
| Sulfuric Acid | Good | Excellent | Fair | Up to 50%, 50 °C |
| Hydrochloric Acid | Good | Excellent | Poor | Up to 37%, 50 °C |
| Sodium Hydroxide (Caustic) | Good | Good | Fair | Up to 25%, 50 °C |
| Sodium Hypochlorite (Bleach) | Fair | Excellent | Poor | Up to 15%, 40 °C |
| Hydrogen Peroxide | Fair | Good | Fair | Up to 30%, 40 °C |
| Organic Solvents | Fair | Good | Poor | Moderate temperature |
| Seawater / Salt Spray | Excellent | Excellent | Excellent | Continuous marine service |
| Petroleum / Hydrocarbons | Good | Excellent | Fair | Moderate temperature |
| Acetic Acid | Good | Excellent | Fair | Up to 25%, 50 °C |
| Phosphoric Acid | Good | Excellent | Fair | Up to 85%, 60 °C |
Ratings: Excellent — long-term service; Good — suitable with normal inspection; Fair — limited service, verify application. Full Chemical Resistance Guide →
Ten Resin Systems for Every Chemical Environment
Corrosion resistance starts with the resin. ZeAllgrate manufactures in ten engineered resin systems, matching the industry’s proven material selection methodology.
| Resin System | Key Property | Max Service Temp | Typical Use |
|---|---|---|---|
| Isophthalic Polyester (ISO) | General corrosion resistance | 60 – 70 °C | Water/wastewater, industrial floors |
| ISO Chemical Grade | Enhanced chemical resistance | 70 – 80 °C | Chemical plant walkways |
| Vinyl Ester (VE) | Superior acid/alkali/solvent resistance | 80 – 90 °C | Chemical, bleaching, pulp |
| VE Chemical Grade | Maximum corrosion performance | 90 – 100 °C | Harshest chemical exposure |
| Phenolic | Low smoke, low flame spread | 120 – 150 °C | Offshore, fire-critical |
| Fire Retardant (FR) | ASTM E84 Class A, flame spread ≤ 25 | 60 – 70 °C | Code-required flame ratings |
| UV-Stabilized | Outdoor UV resistance | 60 – 70 °C | Solar-exposed installations |
| Heat Resistant | High-temperature service | 100 – 120 °C | Process heat areas |
| Conductive (Carbon) | Static-dissipative | 60 – 70 °C | Electrical / explosion areas |
| Food Grade (FDA) | FDA-compliant contact surfaces | 60 – 70 °C | Food & beverage processing |
Our engineers prepare a written resin recommendation with every quotation — matched to your media, concentration and service temperature.
Installation Notes
Cutting
Carbide-tipped or abrasive cutters; support both sides of the cut; wear dust protection. Wet cutting recommended.
Fastening
Fasten every FRP grating panel (GRP grating panel, fiberglass grating panel) at every support intersection. SS304/316 G-clips in corrosive service; expansion bolts for concrete.
Orientation
Pultruded bearing bars run across the span — never parallel. Leave thermal gaps at fixed supports.
| Installation Parameter | Recommended Practice | Standard Reference |
|---|---|---|
| Support Spacing | Maximum span per certified load chart — never exceed recommended clear span | Load chart per configuration |
| Bearing | Minimum 40 mm bearing on each support | ZeAllgrate practice / ISO 14122-3 |
| Fastener Spacing | Minimum 2 hold-down clips per support beam, spaced ≤ 1219 mm (4 ft) on centre; minimum 4 clips per FRP grating panel / GRP grating panel / fiberglass grating panel | Per ZeAllgrate engineering practice |
| Thermal Expansion | Allow 3 – 5 mm expansion gap at fixed supports; molded coefficient ≈ 15–25×10⁻⁶ /°C (direction dependent) | Manufacturer data |
| Cut Holes | Seal cut edges in chemical service with resin; radius corners to avoid stress points | Design guide |
| Fall Protection | Handrail height ≥ 1100 mm (ISO 14122-3) / 42 in (OSHA 1910.23); kickplate where required | OSHA 1910 / ISO 14122 |
Installed Projects
Real installations of ZeAllgrate products across industries.
Choose the Right Resin for Your Environment
Corrosion resistance starts with the resin system. ZeAllgrate offers 3+ engineered resin systems for every chemical environment.
| Isophthalic Polyester | General-purpose corrosion resistance; excellent value for industrial and water/wastewater applications |
| Vinyl Ester | Superior chemical resistance to acids, alkalis and solvents — for chemical plants and bleaching environments |
| Phenolic | Low smoke, low flame spread and high-temperature performance — for fire-critical and offshore applications |
| Fire-Retardant (FR) | Enhanced flame-retardant grades meeting surface-burning requirements (ASTM E84) |
| UV-Stabilized | UV-inhibited formulations for outdoor and solar-exposed installations |
Contact our engineers for a chemical-resistance recommendation matched to your specific media, concentration and temperature.
How to Specify in Four Steps
Define Environment
Identify chemicals, temperature, UV exposure and load requirements.
Choose Grating Type
Molded for bi-directional strength; pultruded for long spans and heavy loads.
Check Load / Span
Verify the support span against certified load charts for your configuration.
Specify Surface & Clips
Grit-top for wet areas; SS304/316 clips for secure fastening.
Frequently Asked Questions
Standard panels: 7-15 days production; custom fabrication 15-20 days, plus shipping time. Urgent orders can be prioritized.
Yes - free small samples are available for evaluation. Contact [email protected] with your application details.
Material certificates and load test reports are supplied with every shipment. Our facility is ISO 9001:2015 certified; marine grades carry DNV & ABS approvals, and third-party SGS & Intertek inspection and testing is available on request.
Explore FRP Grating Types
Choose the right fiberglass grating, GRP grating and composite grating for your project — molded, pultruded, grille and clip systems.
FRP Grating
View →Molded & pultruded FRP grating panels, FRP grate and composite grating for walkways, platforms and trench covers.
GRP Grating
View →Glass reinforced plastic grating panels, GRP grate and GFRP grating from a certified GRP grating factory.
Fiberglass Grating
View →Fiberglass grating panels, fiberglass grate and fibreglass grating for industrial flooring and walkways.
FRP Grille
View →Fiberglass grille, tree grate, tree pit grating and architectural FRP grate.
Pultruded FRP Grating
View →Pultruded fiberglass grating, pultruded GRP grating and FRP pultruded bar grating for long spans.
Grating Clips & Clamps
View →FRP grating clips, clamps and fasteners in SS304/SS316 and galvanized steel.
Go Deeper with the ZeAllgrate Knowledge Base
Molded vs. Pultruded Grating
Read article →When to choose bi-directional molded or unidirectional pultruded strength.
Load & Deflection Selection
Read article →Match load class and span to panel stiffness and deflection limits.
Anti-Slip Surfaces Compared
Read article →Grit-top, concave and silica-cast surfaces and their slip ratings.
Installation Tips
Read article →Clips, cutting, expansion gaps and common field mistakes.
Chemical Resistance & Resin Selection
Read article →Corrosion performance of each resin system against aggressive media.
Load & Span Tables
Read article →Certified load classes and maximum clear spans by configuration.
What We Supply & Where It Goes
As an established FRP grating manufacturer, fiberglass grating supplier and GRP grating factory, ZeAllgrate supplies molded FRP grating, moulded GRP grating (British spelling), molded fiberglass grating, FRP molded grating and mini mesh FRP grating — in covered, gritted, concave surface, fiberglass phenolic and iso resin grades. We deliver custom FRP grating and cut to size FRP grating for export worldwide. For longer spans, pair with our pultruded FRP grating and FRP pultruded bar grating.
Applications
- FRP walkway grating & fiberglass platform grating
- FRP trench cover grating & FRP drainage grating
- Car wash FRP grating & solar rooftop FRP walkway grating
- FRP stair tread grating & dock fiberglass deck grating
- Offshore FRP grating & wastewater treatment FRP grating
- Chemical plant FRP platform grating
- FRP tree grate / FRP tree pit grating
- Livestock fiberglass flooring grating & pigeon floor FRP grating
- Swimming pool overflow FRP grating
Properties & Panel Formats
- Anti-slip FRP grating & corrosion resistant fiberglass grating
- Heavy duty GRP grating, lightweight FRP grating & high strength composite grating
- Non conductive FRP grating, fire retardant fiberglass grating & UV resistant GRP grating
- Industrial fiberglass flooring grating & fiberglass floor grating panel
- FRP grid panel, fiberglass mesh grating & FRP flooring sheet
- Concave surface FRP grating, gritted FRP grating & FRP covered grating
- Micro mesh fiberglass grating, fiberglass phenolic grating & iso resin FRP grating
Need a specific FRP grating panel size, mesh or resin? Tell us your span, load and environment — we cut to size and fabricate to your drawing.
Specify Molded Grating for Your Platform?
Send us your dimensions and environment — we'll confirm availability and pricing within 24 hours.