FRP grating has become a preferred solution for industrial flooring, walkways, and platforms due to its corrosion resistance, lightweight structure, and long service life. The two most common types are molded FRP grating and pultruded FRP grating. Although both are made from fiberglass reinforced plastic, they offer different performance advantages for different applications.
In this guide, we compare molded and pultruded FRP grating in terms of manufacturing process, strength, load capacity, applications, and installation performance to help industrial buyers choose the right option.
What Is Molded FRP Grating?
Molded FRP grating is manufactured by placing continuous fiberglass strands into a mold and saturating them with resin. The grating is formed as a one-piece panel with bi-directional strength.
This type of fiberglass grating is widely used in:
- Chemical plants
- Wastewater treatment facilities
- Cooling towers
- Offshore platforms
- Industrial walkways
Related reading: What Is FRP Material? Properties, Manufacturing Process & Industrial Uses
What Is Pultruded FRP Grating?
Pultruded FRP grating is produced using a pultrusion process where fiberglass rovings are pulled through a resin bath and heated die to create high-strength bearing bars.
Compared with molded grating, pultruded grating provides:
- Higher load-bearing capacity
- Greater span capability
- Better directional strength
- Lighter overall weight
Molded FRP Grating vs Pultruded FRP Grating
| Feature | Molded FRP Grating | Pultruded FRP Grating |
|---|---|---|
| Strength Direction | Bi-directional | Unidirectional |
| Load Capacity | Medium | High |
| Span Capability | Short to medium spans | Long spans |
| Corrosion Resistance | Excellent | Excellent |
| Slip Resistance | Excellent | Excellent |
| Weight | Lightweight | Lighter |
| Typical Applications | Walkways & platforms | Heavy-duty flooring |
Advantages of Molded FRP Grating
• Better Bi-Directional Strength
Ideal for areas requiring multi-directional load distribution.
• Excellent Corrosion Resistance
Suitable for chemical and marine environments.
• Strong Anti-Slip Surface
Available with grit-coated surfaces for worker safety.
• Easy Fabrication
Simple to cut and install on-site.
Advantages of Pultruded FRP Grating
• Higher Load Capacity
Suitable for heavy-duty industrial flooring systems.
• Longer Spans
Requires fewer support beams.
• Lightweight Structure
Reduces transportation and installation costs.
• High Structural Strength
Ideal for platform walkways and access systems.
How to Choose the Right FRP Grating?
When selecting fiberglass grating, consider the following factors:
- Load requirements
- Span length
- Chemical exposure
- Slip resistance needs
- Installation environment
- Budget requirements
For heavy-duty industrial flooring and longer spans, pultruded FRP grating is usually preferred. For chemical plants, walkways, and general industrial platforms, molded FRP grating is often the most economical solution.
Related reading: How to Choose the Right FRP Grating Size for Your Project
Common Applications
- Industrial platforms
- Wastewater treatment plants
- Marine walkways
- Cooling towers
- Food processing plants
- Electrical substations
- Oil & gas facilities
Why Choose Preet Grating?
Preet Grating specializes in:
- FRP Grating
- FRP Pultrusion Profiles
- Steel Grating
- Grating Clips
- Customized Fiberglass Solutions
We provide high-quality molded and pultruded FRP grating solutions for industrial projects worldwide.
Contact Us
For molded FRP grating, pultruded FRP grating, or customized fiberglass flooring solutions, feel free to contact us:
WhatsApp: +8613851475666
Email: info@preet.cn
