What Is an FRP Rib Plate?
An FRP rib plate is a fiberglass-reinforced plastic profile used in industrial composite applications. When evaluating a rib plate for a project, buyers and engineers should review its overall dimensions, section geometry, weight per meter, installation requirements and intended function.
FRP pultruded profiles are used in industrial structures where corrosion resistance, relatively low component weight and electrical insulation are important considerations. However, the exact suitability of a rib plate depends on its design, material specification and service conditions.
This guide introduces the FRP rib plate sizes listed in the PREET Composite Materials product catalog and explains what to check before specifying a profile for an industrial project.
FRP Rib Plate Sizes and Specifications
The PREET product catalog lists two rib plate profiles: a 305 rib plate and a 500 rib plate. The catalog provides their height, width, thickness and weight per meter.
| Profile | Height H (mm) | Width B (mm) | Thickness T (mm) | Weight (kg/m) |
|---|---|---|---|---|
| 305 Rib Plate | 54 | 305 | 4.8 | 4.700 |
| 500 Rib Plate | 54 | 500 | 3.0 | 6.900 |
Specification note: The values above are taken from the PREET Composite Materials product catalog. Sectional area and load capacity are not listed for these two rib plate profiles in the cited table. Confirm any additional technical data with the manufacturer before finalizing a design.
305 Rib Plate vs. 500 Rib Plate
The main listed dimensional difference between these two profiles is their width. Both have a catalog-listed height of 54 mm, while the 305 rib plate has a width of 305 mm and the 500 rib plate has a width of 500 mm.
305 Rib Plate
- Height: 54 mm
- Width: 305 mm
- Thickness: 4.8 mm
- Weight: 4.700 kg/m
This profile may be considered when its listed dimensions suit the available installation space and the project's design requirements. Confirm the intended use, support arrangement and connection details before specifying it for a structural application.
500 Rib Plate
- Height: 54 mm
- Width: 500 mm
- Thickness: 3.0 mm
- Weight: 6.900 kg/m
The 500 rib plate has a greater listed width and a lower listed thickness than the 305 rib plate. Its weight per meter is also higher. These differences show why product selection should consider the complete cross-section rather than relying on a single dimension.
Neither profile should be assumed to have a particular load capacity based on dimensions alone. Request the applicable technical data and confirm whether the selected profile meets the project's design conditions.
How to Calculate FRP Rib Plate Material Weight
Weight per meter helps procurement teams estimate the material quantity required for an order. When the catalog weight is available, the estimated profile weight can be calculated using the following formula:
Estimated total weight (kg) = catalog weight per meter (kg/m) × total length (m)
For example, for 10 meters of each catalog-listed profile:
| Profile | Weight per Meter | Total Length | Estimated Profile Weight |
|---|---|---|---|
| 305 Rib Plate | 4.700 kg/m | 10 m | 47 kg |
| 500 Rib Plate | 6.900 kg/m | 10 m | 69 kg |
These are theoretical estimates based on the catalog weights and stated lengths. Actual shipment weight may vary with cutting, packaging and other supplied components. For purchasing and logistics, confirm the final order details with the supplier.
Potential Industrial Applications of FRP Rib Plates
The suitability of an FRP rib plate depends on its profile geometry and the role it is intended to perform within the larger assembly. Potential applications should be assessed against the manufacturer's product information and project drawings.
Industrial Composite Assemblies
FRP profiles can be incorporated into composite assemblies where non-metallic components are preferred. Before using a rib plate as part of an assembly, confirm its connection method, dimensional compatibility and structural requirements.
Corrosion-Sensitive Environments
Fiberglass-reinforced plastic profiles may be considered in environments where conventional metal components require careful corrosion management. The suitability of a particular FRP product depends on the resin system, chemical exposure, temperature and operating conditions.
Custom Industrial Components
For applications that require a specific profile geometry, buyers should provide drawings, dimensions and operating requirements to the manufacturer. A catalog-listed profile should not be treated as interchangeable with a custom component unless compatibility has been verified.
What to Check Before Ordering FRP Rib Plates
Before requesting a quotation, prepare the following information to help the supplier identify an appropriate product:
- Profile dimensions: Specify the required height, width and thickness, and identify whether the 305 or 500 rib plate is being considered.
- Required length: State the length per piece and total quantity.
- Application: Explain how the profile will be used and how it will be supported or connected.
- Operating environment: Describe exposure to chemicals, moisture, outdoor weather and temperature changes.
- Technical requirements: Request relevant mechanical data, tolerances and other available documentation needed for the design.
- Supply requirements: Confirm color, cutting, packaging, delivery schedule and any customization needs.
If the application involves structural loading, ask the manufacturer for the relevant engineering data. Do not infer a safe span or allowable load from the profile's dimensions or weight alone.
FRP Rib Plates and Other Pultruded Profiles
FRP rib plates are one option within a broader range of fiberglass profiles. Depending on the application, a project may also require other cross-sections with different geometries.
- FRP pultrusion profiles – explore the broader range of fiberglass structural profiles.
- FRP C channel – review a channel-shaped profile for applications where that geometry is required.
- FRP grating – explore grating products for industrial flooring, walkways and platforms.
These product categories serve different purposes. Select a profile based on the actual design, connection details and verified technical specifications rather than appearance alone.
Conclusion
When comparing FRP rib plates, dimensions and weight per meter provide a useful starting point for product evaluation and material planning. The PREET catalog lists a 305 rib plate measuring 54 × 305 × 4.8 mm at 4.700 kg/m and a 500 rib plate measuring 54 × 500 × 3.0 mm at 6.900 kg/m.
For a reliable specification, verify the required geometry, application, environmental conditions and technical performance with the manufacturer. If the listed profiles do not match the project requirements, provide a drawing and request confirmation of available alternatives.
Request FRP Rib Plate Information
Need help confirming FRP rib plate dimensions, availability or technical details? Contact PREET Composite Materials with your required specifications and application information.
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