GFRP Rebar Sizes and Diameters Available in India — Complete 2025 Guide
One of the most common questions engineers and contractors ask before switching to GFRP rebar is: "What sizes are available?"
At RN Elements, we manufacture one of India's widest ranges of GFRP rebar diameters — from 4mm to 32mm — with a monthly production capacity of 100 tonnes, ready to supply projects of all scales across India.
Full Range of GFRP Rebar Sizes at RN Elements
| Diameter | Common Application |
|---|---|
| 4 mm | Crack control mesh, lightweight plaster reinforcement |
| 6 mm | Distribution reinforcement, secondary slabs |
| 8 mm | Footpaths, light slabs, general reinforcement |
| 10 mm | Walls, slabs, secondary structural reinforcement |
| 12 mm | Beams, columns, retaining walls, industrial floors |
| 16 mm | Heavy slabs, bridges, heavy retaining walls |
| 20 mm | Heavy infrastructure, marine structures |
| 25 mm | Large civil projects, coastal and port structures |
| 32 mm | Deep foundations, heavy infrastructure, large civil projects |
Custom lengths available on request for large or project-specific orders.
How to Choose the Right Diameter
1. Follow your structural drawings Your structural engineer specifies the required diameter based on load calculations and IS 18256:2023 / IRC:112-2020.
2. Match the application - Crack control and distribution → 4–8 mm - Slabs, walls, footings → 8–12 mm - Beams, columns, heavy slabs → 12–16 mm - Bridges, marine, deep foundations → 20–32 mm
3. Corrosive environments GFRP's full strength is maintained for 50–100 years without corrosion loss — unlike steel which loses effective cross-section over time.
Weight Comparison by Diameter (GFRP vs Steel)
| Diameter | Steel (kg/m) | GFRP (kg/m) | Weight Saving |
|---|---|---|---|
| 8 mm | 0.395 | 0.104 | ~74% lighter |
| 10 mm | 0.617 | 0.162 | ~74% lighter |
| 12 mm | 0.888 | 0.234 | ~74% lighter |
| 16 mm | 1.578 | 0.415 | ~74% lighter |
| 20 mm | 2.466 | 0.648 | ~74% lighter |
| 25 mm | 3.853 | 1.013 | ~74% lighter |
| 32 mm | 6.313 | 1.660 | ~74% lighter |
⚠️ Prices and weights are approximate and for reference only. Contact RN Elements for exact specifications and current pricing.
Production Capacity
RN Elements operates a dedicated pultrusion facility in Surat, Gujarat with a monthly production capacity of 100 tonnes — sufficient for mid-to-large infrastructure, industrial, and real estate projects.
For large project requirements, we recommend early engagement so we can plan production scheduling and ensure timely delivery.
Supply Options
- Straight lengths: 3m, 6m, 9m, 12m (custom lengths available)
- Coils: For 4–10mm diameters — ideal for continuous placements
- Pre-formed bent bars: L-bars, U-bars, stirrups manufactured to your drawing specifications
Conclusion
From 4mm to 32mm, RN Elements covers every GFRP rebar requirement — from light crack control to heavy infrastructure. With 100 tonnes monthly capacity and Gujarat-based logistics, we can supply your project on time and at the right cost.
👉 Contact us for size availability, lead times, and pricing →
📩 rnelementsllp@gmail.com | 📞 +91 9227990800
RN Elements — for creators who build a legacy.