FRP Gratings
FRP Gratings Manufacturer & Supplier in India
Rawji Exports has been manufacturing FRP gratings in India since 1962, supplying industrial flooring, walkways, trench covers, drainage systems and platform panels for heavy-duty infrastructure applications. The fiberglass reinforced plastic composite resists corrosion where mild steel gratings eventually rust through — a difference that shows up most in chemical plants and wastewater facilities running continuous wet conditions.
We manufacture both moulded and pultruded gratings, in different mesh sizes, panel dimensions, thicknesses and resin systems depending on the load and chemical exposure a site needs. Beyond corrosion resistance, the material is electrically non-conductive and anti-slip by design, which is why power plants, marine industries and food processing units specify it in areas where a steel grating would need additional safety coatings.
Standard panel sizes cover most flooring and walkway needs, but refineries and infrastructure projects often require custom dimensions or load ratings — we manufacture to the site's actual specification rather than fitting a project to a fixed catalogue size. Our range also includes drain and gully covers for trench and drainage applications. Every panel goes through raw material inspection and dimensional checks before dispatch, the same process we follow across our full FRP product range.
Pricing depends on panel size, thickness, resin type and order quantity — a thin walkway panel costs less than a thick, chemical-resistant industrial grade. As a direct manufacturer, Rawji Exports offers bulk supply, custom manufacturing and PAN India delivery with technical support for sizing and load selection.
Explore our complete FRP product range: View
Specifications for FRP Gratings
- GRP/FRP Gratings are produced by wet moulding and hot curing in a heated mould.
- The reinforcement consists of continuous fibreglass rovings in alternating layers, so the loads are distributed evenly in all directions.
- Regularly Moulded GRP Gratings have a polyester resin matrix.
- Glass content is approximately 35%. Standard colours are green, yellow or grey, other colours are available according to RAL.
Advantages of FRP Gratings
- Corrosion And Chemical Resistance.
- High Strength To Weight Ratio.
- Electric And Thermal Non Conductive.
- EMI/RFI Transparent.
Looking for customized FRP gratings for your industrial project? Our technical team can help you select the right grating based on load capacity, chemical resistance and application requirements.
Contact UsGully Gratings
Moulded Grating
Gully Grating
Pultruded Grating
Square Grating
Comparision with Conventional Material
Features
- Corrosion Resistance
- Strength
- Weight
- Electrical Conductivity
- Thermal Conductivity
- EMI/RFI Transparency
- Fabrication
- Life Cycle Cost
- Environmental Impact
Rawji FRP
High
High
Low
Low
Very Low
Yes
Easy
Low
Low
Steel
Low
High
High
High
High
No
Easy
Moderate
High
Aluminium
Medium
High
Low
High
High
No
Moderate
Moderate
High
Timber
Low
Low
Medium
Moderate
Low
Yes
Easy
High
Low
Material Details
COMPOSITE MATERIAL
Composites are materials made up of at least two different component materials, neither of which is suitable for structural use on its own, but when combined, they form a sturdy and firm material.
FRP / GRP MATERIAL
Fibre Reinforced Plastic / Glass Fibre Reinforced Plastic is a composite material made of a polymer matrix reinforced with fibres. These fibres are typically fibreglass, carbon, or aramid, while the polymer is usually an epoxy, vinylester, or polyester thermosetting plastic.
RAW MATERIAL OF FRP
- Glass Fibres: Provide stiffness and resist tensile and compressive loads.
- Resin: Transfers load between fibres and bonds them together.
- Other Additives: Provide fire retardancy, electrical insulation, etc.
RESIN SYSTEM – Polyester
- Most commonly used; good mechanical, electrical, and chemical balance.
- Can be modified for flame retardancy or self-extinguishing behavior.
- Excellent resistance in weak acid/alkali environments.
- Max operating temp: 80°C (basic grade).
RESIN SYSTEM – Vinyl Esters (VE)
- Combines benefits of polyester and epoxy resins.
- High strength and excellent acid/alkali resistance at high temps.
- Good thermal and electrical insulation.
- Max operating temp: 90–150°C.
Pultrusion Process
Pultrusion is the process of pulling fibreglass reinforcements such as mats and
strands through a proprietary resin and heated die. The result is a specific complex profile that can
be cut to any length. This process offers speed and consistency making it the best method for
producing high-volume linear fiberglass products that require constant cross sections.
Pultrusion refers to pulling plastic raw material through a preformer. This
production method is particularly suitable for tubes, profiles etc. reinforced with continuous fibres,
involving pulling of impregnated fibres via preformers providing the form as, simultaneously, the
plastic is hardened with heat (thermoset) or cooled until solid (thermoplast).
Moulding Process
GRP/FRP Gratings are produced by wet moulding and hot curing in a heated mould. The reinforcement consists of continuous fibreglass rovings in alternatinglayers, so the loads are distributed evenly in all directions. Regularly Moulded GRP Gratings have a polyester resin matrix. Glass content is approximately 35%. standard colours are green, yellow or grey, other colours are available according to RAL.
Resin System For Gratings
| Resin Type | Resin Base | Description | Flame spread rating ASTM E84 |
|---|---|---|---|
| Type IFR | Isopthalic Polyester | Industrial Grade Corrosion resistance & fire retardant | Class 1, 25 or less |
| Type I | Isopthalic Polyester | Industrial Grade Corrosion resistance in acidic environment | Non fire retardant |
| Type V | Vinyl Ester | Superior Corrosion resistance & fire retardant | Class 1, 25 or less |
| Type P | Phenolic | Low smoke and superior fire retardant | Class 1, 5 or less |
Accessories
M CLIP - FOR FIXING MOULDED GRATING WITH SUPPORT STRUCTURE (Ordering Code: ASMGC-38)
C CLIP - FOR FIXING PULTRUDED GRATING WITH SUPPORT STRUCTURE (Ordering Code: ASPGC-I-00)
C CLAMP - FOR FIXING TWO MOULDED GRATING PANELS (Ordering Code: ASMGC-C-25/38)
PULTRUDED GRATING CLAMP - FOR FIXING TWO PULTRUDED GRATING PANEL (Ordering Code: ASPGC-I-01)
Types of Surface Finish of Grating
Concave Top: Suitable for wet & oily conditions
Inbuilt Grit: A quartz grit finish applied in the mould during manufacture
Applied Grit: A quartz grit sealed with a tough, long wearing epoxy coat
Chequered Plate/Grit Top
Industrial Applications of FRP Gratings
FRP gratings are used across industrial and infrastructure sectors wherever corrosion resistance, an anti-slip surface and low maintenance matter more than the raw strength a metal grating offers — from platform flooring and walkways to drain and gully covers.
Chemical & Process Industries
FRP gratings are installed in chemical plants and process industries where steel gratings eventually corrode from acid or solvent exposure. The fiberglass composite doesn't react with most industrial chemicals, so panels stay structurally sound over years of continuous exposure.
Wastewater Treatment Plants
FRP walkway gratings and trench covers are used in sewage and wastewater facilities because they resist moisture, acids and gases that would rust or pit a steel grating over the same operating period.
Marine & Offshore Platforms
Saltwater corrodes steel flooring systems faster than almost any other environment. Fiberglass reinforced plastic gratings hold up in that exposure without the recoating and replacement cycle marine steel structures typically need.
Power Plants & Refineries
Industrial FRP floor gratings combine an anti-slip surface with electrical non-conductivity, which matters directly in power plants and refineries where a metal grating near live equipment is a safety liability.
Food Processing Industries
FRP gratings don't rust or pit the way steel does under repeated washdown, which matters in food and beverage facilities that clean floors with chemical agents daily — a rusting surface becomes a hygiene issue over time.
Commercial Infrastructure Projects
Rawji Exports supplies customized FRP moulded gratings for infrastructure projects — industrial walkways, drain and gully covers, platforms and utility access panels — sized to each project's actual layout rather than a fixed catalogue panel.
FRP Gratings Supply Across India Since 1962
Rawji Exports supplies FRP gratings to Mumbai, Pune, Delhi, Chennai, Bangalore, Hyderabad, Ahmedabad and PAN India industrial infrastructure projects, with order sizes ranging from single-site custom panels to bulk supply for large industrial and refinery projects.
Every order is manufactured after confirming the exact mesh size, load rating and resin system a project needs — we don't ship a standard catalogue panel and expect it to fit every site. This is the same order process used across our full FRP product range, refined over decades of supplying industrial and municipal projects.
For projects with tight installation timelines, we coordinate production scheduling with delivery dates upfront, rather than confirming logistics only after manufacturing is complete.
Frequently Asked Questions – FRP Gratings
FRP stands for Fiber Reinforced Plastic. An FRP grating is a load-bearing floor or walkway panel moulded from fiberglass reinforced composite, used as a lighter, non-conductive alternative to steel grating.
Moulded FRP gratings use continuous fibreglass rovings set in resin and cured in a heated mould, distributing load evenly in all directions. Pultruded FRP gratings are formed by pulling fibreglass through a resin bath in a linear profile, giving a higher strength-to-weight ratio for heavy load-bearing applications.
FRP grating price in India depends on thickness, mesh size, resin type and panel size, and is usually quoted per square metre or per panel. Rawji Exports offers competitive factory-direct pricing with bulk supply solutions for industrial projects.
Rawji Exports manufactures FRP gratings in standard panel sizes with multiple thickness and mesh options. Panel dimensions and load capacity can also be customized to your project's platform or walkway requirement.
FRP grating weight per square metre depends on the thickness and mesh pattern, but is significantly lower than an equivalent steel grating panel of the same load rating, which is why FRP gratings are easier to handle and install.
FRP gratings, being fiberglass reinforced plastic articles, generally fall under HSN code 3925. Contact Rawji Exports for the exact HSN code and GST rate applicable to your specific order.
FRP gratings are lightweight, corrosion resistant, electrically non-conductive and require lower maintenance than steel gratings, which rust and need periodic repainting in wet, chemical or coastal environments.
Yes, FRP drain gratings and gully gratings are widely used for trench covers and drainage systems because they resist corrosion from moisture and chemicals better than metal covers, while remaining lightweight to lift and install.
Yes, Rawji Exports manufactures customized moulded and pultruded FRP gratings based on load requirements, mesh size, panel dimensions and industrial application.
Supplying industrial FRP gratings across Mumbai, Pune, Delhi, Chennai, Bangalore, Hyderabad, Ahmedabad and PAN India infrastructure and industrial projects.