Product Overview
These moulded gratings are manufactured using FRP composites. We also supply related industrial FRP products such as pultruded FRP profiles, FRP rebar, pultrusion machines, and pultrusion dies.
Our 12.5mm FRP (Fiberglass Reinforced Plastic) moulded gratings represent a thin option in our standard range, specifically designed for applications where installation height is limited. With a precise 50x50mm mesh pattern and 6-5mm rib thickness, these gratings provide an 82% open area while maintaining structural integrity for light to medium-duty applications.
Manufacturing Process
These gratings are produced through a specialized wet moulding process where:
- Continuous fiberglass rovings (35% glass content) are arranged in alternating layers
- The structure is thoroughly saturated with thermosetting polyester resin
- The material is hot-cured under pressure in heated moulds
- The result is an integral one-piece panel with bi-directional strength
Technical Specifications of 12.5mm Gratings
| Specification | Details |
|---|---|
| Height | 12.5mm (thinnest standard option) |
| Mesh Size | 50x50mm |
| Rib Thickness | 6-5mm |
| Open Area | 82% |
| Standard Sheet Sizes | 1007 x 2007mm, 1007 x 4047mm |
| Weight | Approximately 10-12 kg/m² |
| Resin System | Isophthalic Polyester (standard) |
| Load Capacity (Uniform) | 4.5 kN/m² at 500mm span |
| Color | Safety Yellow (standard) |
Key Advantages of 12.5mm FRP Gratings
Space-Constrained Applications
The 12.5mm profile makes these gratings suited for:
- Retrofit projects with limited vertical clearance
- Trench covers requiring minimal depth
- Walkway overlays on existing flooring
- Areas where maintaining headroom is important
Performance Benefits
- Lightweight Design: approximately 75% lighter than steel of equal load rating, reducing installation costs and structural load requirements
- Corrosion Resistance: Resistant to many acids, alkalis, salts, and hydrocarbons
- Safety Features: Non-conductive, non-sparking, and slip-resistant
- Low-Maintenance: No painting, coating, or regular maintenance required in compatible environments over a long service life
Cost-Effective Solution
The 12.5mm gratings provide substantial cost savings through:
- Reduced transportation costs due to lightweight design
- Simpler installation requiring fewer workers and no heavy equipment
- Low maintenance requirements in compatible environments
- No regular protective coatings required in many corrosive environments
Applications Specifically Suited for 12.5mm Gratings
- Light-duty walkways in industrial facilities
- Trench and drain covers where depth is limited
- Water treatment plant catwalks and access platforms
- Food processing areas requiring sanitary, easily cleanable surfaces
- Laboratory flooring and work platforms
- Marine environments with exposure to salt water
- Chemical processing facilities with splash exposure
Frequently Asked Questions About 12.5mm FRP Gratings
How does the 12.5mm thickness affect load capacity?
The 12.5mm gratings are designed for pedestrian traffic and light loads up to 4.5 kN/m² when supported every 500mm. For heavier applications, our 25mm or 38mm options provide increased load capacity while maintaining the same corrosion resistance and other benefits.
Can these thin gratings be cut on-site?
Yes, unlike metal alternatives, our 12.5mm FRP gratings can be easily modified on-site using standard circular saws with diamond or carbide-tipped blades. This eliminates the need for pre-fabrication and allows for field adjustments.
How are the 12.5mm gratings typically secured?
These gratings can be installed using:
- FRP hold-down clips (recommended for corrosive environments)
- Stainless steel M-clips for chemical resistance
- Standard galvanized clips for general applications
- Self-tapping screws for temporary installations
What is the fire performance of the 12.5mm gratings?
Our standard formulation meets ASTM E-84 Class 2 fire rating. For applications requiring enhanced fire resistance, we offer a Class 1 formulation with a flame spread index ≤25.
How does the 12.5mm grating compare to other materials for thin profile applications?
| Property | 12.5mm FRP Grating | Thin Steel Grating | Aluminum Grating |
|---|---|---|---|
| Weight | 10-12 kg/m² | 35-40 kg/m² | 14-16 kg/m² |
| Corrosion Resistance | Excellent | Poor | Moderate |
| Installation Ease | Very High | Low | Medium |
| Cut On-Site | Yes – Standard Tools | Difficult | Possible |
| Expected Lifespan | Long service life | 8-15 years (with maintenance) | 20-30 years |
| Initial Cost | Medium | Low | High |
| Lifecycle Cost | Lower in compatible environments | Higher | Medium |
Our 12.5mm FRP moulded gratings provide a practical balance of minimal height and reliable performance for applications where installation space is limited. Contact our technical team today for samples or specific recommendations for your project requirements.
For longer spans and higher loads, see the pultruded FRP grating range in structural I-bar and T-bar profiles.
Request a Quote for 12.5mm FRP Moulded Gratings
Need 12.5mm FRP moulded gratings for walkways, trench covers, or platforms? Contact us for a quote and we will confirm sheet sizes, quantities, and lead time.
