FRP grating size and thickness selection guide: analysis of application scenarios of different specifications
FRP grating (FRP grating) is widely used in chemical, electric power, sewage treatment, shipbuilding and other industries due to its light weight, high strength, corrosion resistance, insulation and flame retardancy. The selection of its size and thickness directly affects the load-bearing capacity, safety and economy, and needs to be reasonably selected according to the specific scenario. The following is a comparison of common specification parameters and their typical application scenarios:
Relationship between FRP grating thickness and load-bearing capacity
25mm Thickness
Load-bearing capacity: light load (≤1 ton/㎡)
Application scenario
Pedestrian walkway, walkway platform
Equipment inspection trail
Light storage shelf interlayer
Green landscape plank road
38mm Thickness
Load-bearing capacity: medium load (1~3 tons/㎡)
Application scenario
Factory workshop operation platform
Sewage treatment pool cover
Vehicle light rolling area (such as parking lot drainage cover)
Offshore platform protection Sliding deck
50mm Thickness and above
Carrying capacity: heavy load (3~5 tons/㎡ or more)
Application scenarios
Heavy machinery operation area (such as around the reaction tank of a chemical plant)
Wharf loading and unloading area
High-strength explosion-proof places (such as oil depots, chemical plants)
Vehicle frequent traffic areas (such as logistics warehouse loading and unloading platforms)
The impact of FRP grating size on application
In addition to thickness, the plane size (length and width) and mesh hole type (such as 38×38mm, 50×50mm) of the grating also need to be selected according to actual needs:
Standard size (such as 1m×2m, 1.22m×3.66m, etc.)
- Advantages: easy to transport and install quickly, suitable for conventional platform construction.
- Application: most standardized scenes such as industrial platforms and walkways.
Customized size
- Advantages: adapt to special site shapes (such as arcs and special-shaped structures) and reduce cutting losses.
- Application: ship decks, complex equipment fences, customized architectural decoration, etc.
Grid aperture selection
Small aperture (such as 19×19mm): prevent falling objects and small tools from falling, suitable for precision equipment workshops or high-altitude work areas.
Selection Considerations
- Environmental factors: When the concentration of corrosive media (acid, alkali, salt) is high, it is necessary to select a grille with a higher resin content (such as more than 70%) and increase the thickness to extend the life.
- Safety requirements: For scenes that require anti-slip, a surface sanding or patterned plate design should be selected; flame-retardant resins should be used in flammable areas.
- Economical efficiency: Avoid excessive thickness in light scenes, and reserve a safety margin for heavy scenes to avoid deformation or breakage due to insufficient load-bearing.
The production of FRP grating mainly adopts the following processes:
Molding: After mixing glass fiber and resin, put them into the mold for high temperature and high pressure curing and molding, which is suitable for standard specification gratings.
Pultrusion molding: Produce grating profiles through pultrusion process, and then assemble them into grating plates, which are suitable for high-strength demand scenarios.
Hand lay-up molding: Suitable for customized special-shaped gratings, which are cured and molded after manual laying.
Vacuum infusion: The resin evenly penetrates the fiber under vacuum environment to improve the density and strength of the product.
High Strength
The specific strength of FRP is higher than that of steel, and the hoop tensile strength can reach more than 300MPa.
Corrosion Resistance
It can resist corrosion from chemical media such as acids, alkalis, salts, and organic solvents, and its service life is more than 30 years.
Light Weight
The density is only 1/4 of that of steel pipes, which is convenient for transportation and installation.
Low Friction Coefficient
The inner wall is smooth (roughness coefficient 0.0084), the hydraulic performance is excellent, and the conveying efficiency is high.
Good thermal insulation
Low thermal conductivity (0.25W/m·K), reducing heat energy loss.
Anti-aging&Electrical insulation
Anti-ultraviolet agent is added, suitable for outdoor and harsh environments. Non-conductive, suitable for power, communication and other fields.
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How to choose the right FRP grating?
Choose thickness according to load-bearing requirements: light load (25mm), medium load (38mm), heavy load (50mm).
Consider the corrosive environment: choose a resin type that is resistant to acid, alkali and salt spray.
Anti-slip requirements: choose a sand surface or patterned surface treatment.
Color and aesthetics: choose the right color according to the use environment.
FRP grating has become an ideal substitute for traditional metal gratings due to its excellent corrosion resistance, high strength, light weight and long life. As a professional FRP grating manufacturer, we provide a variety of specifications and customized services, suitable for chemical, electric power, shipbuilding, construction and other fields. If you need to know more about the price, model and installation method of FRP grating, please consult!