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FRP Molded Grating: Product Series, Structural Features and Industrial Selection Guide
FRP Molded Grating Product Range & Performance
Greenlogy TEC offers a complete range of molded grating products covering multiple resin systems and structural forms for industrial platforms, walkways and corrosive environments.
High Load Molded Grating
Designed for heavy-duty applications such as forklift and vehicular traffic, with bi-directional load-bearing structure suited to industrial areas with frequent passage.
Imitate Pultruded Molded Grating
Developed for docks and marinas, meeting Americans with Disabilities Act (ADA) and US Corps of Engineers standards for coastal dock applications.
Covered & Conductive Top Grating
Covered grating provides a solid surface for walkways or odor control; conductive top grating offers an anti-static surface for areas requiring static control.
Contact our technical team for specifications and selection support.
Frequently Asked Questions
Where are FRP molded gratings typically used?
Molded grating is made by interweaving glass fibers and molding them with resin into a panel with regularly spaced openings, giving it bi-directional load-bearing behavior. It suits corrosive environments such as chemical plants, paper mills, power stations, wastewater treatment plants, smelters, salt fields, mines and food processing plants, as well as various building platforms, walkways and floor covers. The right
What is the difference between high load molded grating and standard molded grating?
High load molded grating is engineered for heavy-duty applications such as forklift and vehicular traffic, with a bi-directional load-bearing structure suited to industrial areas with frequent passage. Standard molded grating also offers bi-directional strength but is more commonly used for general platforms and walkways. If vehicles pass through the area regularly, the high load range is the appropriate starting poi
Is imitate pultruded molded grating suitable for docks and marinas?
Imitate pultruded molded grating is a product line developed for docks and marinas, and the company states it meets Americans with Disabilities Act (ADA) and US Corps of Engineers standards for coastal dock applications. It can be used for walkway areas on coastal and waterfront platforms. Please confirm the exact configuration with our technical team.
Where are covered grating and conductive top grating used?
Covered grating provides a solid surface and can serve as a walkway or for odor control. Conductive top grating offers an anti-static surface for areas requiring static control. Both are part of the molded grating range and can be selected separately according to the function required on site.
What is the open area of the screening grating?
Greenlogy TEC screening grating has an open area of 87%, allowing good airflow. This feature suits platforms and walkways where ventilation or drainage matters. If you need to combine it with other grating types, contact us for selection advice.
What resin, color and mesh options are available for FRP molded grating?
Molded grating can be configured with different resins, colors, depths, panel sizes and mesh patterns to match the load and installation requirements of a project. The company also offers a tested resin system designed to inhibit bacterial growth, which suits locations with hygiene requirements. Contact our technical team for specifications and selection support.
Greenlogy TEC © Molded Gratings
FRP grating with bi-directional strength and corrosion resistance; available in a variety of resins, colors, depths, panel sizes and mesh configurations.
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Greenlogy TEC © Molded Gratings
Offering bi-directional strength and Americans with Disabilities Act (ADA) compliant flooring.
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Greenlogy TEC © Imitate Pultruded Molded Gratings
Our newest additionto our product line - specifically designed for docks and marinas; meets American with Disabilities (ADA) and US Corp of Engineers Standards for coastal docks.
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Greenlogy TEC © Gratings
Lightweight FRP grating designed for screening or protective flooring applications.
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Greenlogy TEC © Resin System
A unique resin system successfully tested to inhibit unwanted growth of bacteria.
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FRP grating is weaved by glass fiber staggered and molded by resin casting the overall . It has a lot of regularly distributed grid, and has the mechanical characteristics of biaxial stress. The use of fiberglass products in the corrosive environment is the most ideal choice. FRP grating can be widely used in chemical industry, papermaking industry, power plants, sewage treatment plants, smelters, salt, nuclear power plant, battery production, mining, food processing plants. At the same time, FRP grating is also applicable to all types of building facilities.
This page is one line of the full FRP and industrial product range - molded and pultruded gratings, structural profiles, ladders, platforms, stairs and accessories, grouped by the service condition each one suits.
Molded grating meshes, panel sizes and open area
Molded grating is named by its mesh and its depth: the number pair is the bar spacing in millimetres and the H number is the panel height. Six meshes are in standard production, each with its own panel sizes and open area.
| Mesh | Open area | Weight (kg/m²) | Panel sizes (mm) |
|---|---|---|---|
| 19*19H30 | 40% | 19.1 | 1220 x 4000, 1220 x 3660, 1220 x 2440, 915 x 3050 |
| 38*38H30 | 68% | 14.6 | 1524 x 4000, 1220 x 4000, 1220 x 3660, 1220 x 2440, 915 x 3050 |
| 50*50H50 | 78% | 23.7 | 1800 x 4000, 1524 x 4000, 1220 x 3660, 1220 x 2440, 915 x 3050 |
| 38*152H38 | 67% | 15.92 | 1220 x 3660, 1220 x 2440, 915 x 3050 |
| 38*38H50 | 56% | 42 | 1220 x 4000, 1220 x 3660, 1220 x 2440, 915 x 3050 |
| 25*152H38 | 62% | 23.1 | 565 x 3050 (stair tread panel) |
38*38H30 is the general-purpose panel at 68% open area and 14.6 kg/m² - enough drainage and snow shedding for walkways and platforms. 19*19H30 closes the mesh to 40% where small parts must not fall through, and 50*50H50 opens up to 78% for airflow and vision through the deck. 38*38H50 is the heavy-duty mesh at 42 kg/m², while the two rectangular meshes - 38*152H38 and 25*152H38 - run their load-bearing bars lengthwise and form the stair tread family.
Resin system and surface finish
What a panel survives is decided by its resin system, not by the fact that it is FRP. Choose the resin against the chemicals and the service temperature first, then the surface.
| System | Base resin | Oxygen index | Typical use |
|---|---|---|---|
| OFR-25 | Orthophthalic | ≥28 | General acid and alkali service |
| IFR-25 | Isophthalic | ≥28 | General industrial service |
| VEFR-25 | Vinyl ester | ≥28 | Severe acids and alkalis |
| VEFR-10 | Vinyl ester | ≥35 | Higher flame resistance with chemical service |
| MP-5 | Phenolic | ~80 | Maximum flame resistance and low smoke |
| IFGR-30 | Isophthalic, food grade | 26 | Food processing areas |
| OCR | Orthophthalic | - | Non flame-retardant applications |
Molded panels take three surfaces: groove type, with the anti-slip grooves molded into the panel and the standard surface for industrial flooring and walkways; shop sand type, a sanded top for extra grip in wet or oily areas; and polished type, a smooth finish where a low profile and easy cleaning matter.
Why molded rather than pultruded
Molded grating is cast in a one-piece mold with continuous fiberglass strands running in both directions, so the finished panel carries load along and across it. On site that has three consequences: a panel keeps its strength whichever way it is laid or cut; infill bays, walkways and stair treads can all be cut from the same standard panel; and a platform can mix molded infill with pultruded panels where the long spans need the deeper bars.
The trade-off is span. With moderate loads, molded panels such as 19*19H30 and 38*38H30 suit supports up to about 900 mm; beyond that, or with heavy concentrated loads, the pultruded I, T and HL series carry further. The molded vs pultruded guide sets the two side by side.
Check the mesh against the span before ordering
A load table has three ingredients: the span between supports, the load applied, and the mid-span deflection that results. Two load cases are published - linear load in kg/m for a pipe crossing the panel or a concentrated foot load, and uniform load in kg/m² for an evenly loaded deck. Each table also gives the limit load; working loads stay below it by a safety factor, and in most projects the deflection the specification allows decides the mesh well before the limit load is reached.
The linear-load tables for 19*19H30 and 38*38H30 run from 300 to 900 mm spans, with limit loads falling from about 9,900 kg/m to about 2,600 kg/m across that range. Read the deflection for your own span and working load in the load capacity guide before fixing the mesh.
What to send for a molded grating quotation
Six items let us answer with a specification instead of a price per square metre:
- Span between supports, and whether the panel is fixed or removable
- Load - foot traffic, trolley, or wheel load with the contact area
- Environment - the chemicals, their concentration and the service temperature
- Mesh and height if already specified, or the smallest object that must not fall through
- Panel sizes or a layout drawing, including openings and penetrations
- Quantity, delivery address and the date the panels are needed on site
Panels are cut to your layout; openings, penetrations and edge infill are cut and drilled on site with standard carbide tools, and cut edges are sealed for the service environment. We also supply pre-cut and pre-fitted panels. Send the list to admin@greenlogy.cn and the reply quotes the matching mesh, resin system and surface, with price, packing and delivery confirmed together.
Specification guide: mesh, height, panel size and resin | load capacity | molded vs pultruded | anti-slip surfaces | FRP vs steel grating | reference library