High-Impact Molded Fiberglass Flooring
Omkar Gratings manufactures industrial-grade Molded FRP (Fiber Reinforced Plastic) and GRP Gratings built for demanding operational environments where conventional carbon steel or galvanized gratings suffer aggressive corrosion.
Our molded FRP gratings are engineered in standard rib thicknesses of 9 x 11 mm and 6 x 8 mm, with section heights varying from 15 mm up to 40 mm. Available mesh openings range from 30 x 30 mm up to 50 x 50 mm, supplied in open-mesh format or integrated with an anti-skid chequered cover plate according to international project specifications.
- Zero scrap value — Eliminates theft and on-site pilferage risks
- Lightweight structural matrix — Easy transportation and manual handling
- High bidirectional load resistance across longitudinal and lateral ribs
Corrosion Resistance
Engineered resin matrix provides durable resistance in continuous exposure to acidic, alkaline, and severe marine environments.
Fire Retardancy
Formulated with premium fire-retardant additives meeting ASTM E-84 Class 1 flame spread rating criteria for safety compliance.
Non-Conductive
Electrically and thermally non-conductive, protecting personnel around high-voltage switchyards, substations, and electrolysis bays.
Low Maintenance
Requires no secondary sandblasting, recoating, or re-galvanizing throughout decades of demanding corrosive service life.
FRP Grating Load & Deflection Data
Total Uniformly Distributed Load (U.D.L.) in kilograms for specific central deflection limits under standard testing conditions.
| Grating Height (mm) | Clear Span (mm) | Total U.D.L. (kg) for 5 mm Deflection | Total U.D.L. (kg) for 10 mm Deflection |
|---|---|---|---|
| 20 mm | 450 | 500 | 900 |
| 30 mm | 900 | 200 | 540 |
| 750 | 315 | 765 | |
| 450 | 1350 | 4200 | |
| 35 mm | 900 | 315 | 735 |
| 750 | 615 | 1515 | |
| 40 mm | 900 | 375 | 825 |
| 750 | 645 | 1545 |
Corrosion Resistance Matrix Across Resin Variants
Omkar Gratings provides three industrial resin variants optimized for operational temperatures (°C) and exposure chemistry.
| Chemical Medium Category | Corrosive Reagent & Concentration | ISO-PHTHALIC (°C) | BISPHENOL (°C) | VINYLESTER (°C) |
|---|---|---|---|---|
| Environment | Atmospheric Exposure | 60 | 100 | 100 |
| Saline / Marine Spray | 60 | 100 | 100 | |
| Acids | Hydrochloric Acid (HCl 30%) | 50 | 60 | 80 |
| Sulfuric Acid (H2SO4 10%) | 45 | 70 | 80 | |
| Acetic Acid (50%) | 45 | 70 | 80 | |
| Phosphoric Acid (H3PO4 80%) | 65 | 90 | 95 | |
| Salts | Sodium Chloride (NaCl All conc.) | 65 | 80 | 90 |
| Sodium Sulfate (Na2SO4) | 50 | 90 | 95 | |
| Sodium Carbonate (Na2CO3 10%) | 40 | 70 | 80 | |
| Alkalies | Sodium Hydroxide (NaOH 30%) | - | 60 | 70 |
| Solvents & Halogens | Chlorine Gas | 45 | 90 | 100 |
| Alcohols | Ethyl Alcohol | 40 | 60 | 80 |
| Esters | Butyl Acetate | - | 30 | 40 |
Installation Guidelines & Fastener Fixing
Proper securing of FRP grating panels ensures system stability and personnel safety under dynamic site traffic:
- Specially engineered SS304 / SS316 M-Clamps or C-Clamps insert seamlessly into the molded open mesh cells.
- Pilot holes are drilled directly into the supporting structural steel flange or fiberglass profile framework.
- Bolts and lock nuts are torqued through the support member to establish permanent hold-down resistance.
- A minimum of four corner clamps per panel section is strictly recommended to eliminate displacement under operational vibration and wheel loads.
Molded Walkway Panels 
Chemical Floor Gratings 
Drainage Trench Covers 
Heavy Duty Platforms Common Questions on FRP Gratings
What resin matrix options are available for FRP gratings?
Omkar Gratings produces FRP gratings in three primary resin formulations: Isophthalic Polyester for standard chemical and saline exposure up to 60°C, Bisphenol for higher chemical thermal resistance up to 100°C, and Vinyl Ester for severe industrial acid and aggressive solvent handling up to 100°C.
How are FRP gratings anchored to structural supports?
FRP grating panels are secured using specialized stainless steel saddle (M-type or C-type) clamps placed into the mesh apertures. The clamp is bolted through a drilled clearance hole in the supporting beam using an SS304 or SS316 nut, bolt, and washer assembly. A minimum of four clamps per panel corner is recommended to prevent shifting under operational live loads.
What are the primary operational benefits of FRP over galvanized steel?
FRP gratings do not corrode in acidic or saline conditions, weigh approximately one-third of steel, have zero electrical conductivity, offer intrinsic fire retardancy, and possess no scrap value, which eliminates site pilferage.
Need an Engineering Quote or FRP Layout Evaluation?
Send your project spans, environmental media details, or layout drawings. Our technical team will assist with custom bill of materials and export quotations.