Technical Resources

Download datasheets, certificates, and guides to help you specify and work with GFRP reinforcement.

Frequently Asked Questions

What are GFRP bars?

GFRP (Glass Fiber Reinforced Polymer) bars are composite reinforcement materials made from glass fibers embedded in a polymer resin matrix. They provide superior corrosion resistance, high tensile strength, and are significantly lighter than traditional steel reinforcement.

What Indian standards do NJVB GFRP bars comply with?

Our GFRP bars are manufactured to comply with IS 18256:2023 (for all structural uses), IS 18255:2023, and IRC:137:2022 (for road bridges). We are also MoRTH approved for highway and infrastructure applications.

How do GFRP bars compare to steel in terms of cost?

While the upfront material cost of GFRP may be higher, the total lifecycle cost is significantly lower due to eliminated corrosion maintenance, reduced transportation costs (4× lighter), faster installation (no heavy equipment), and 80-100 year lifespan vs 40-50 years for steel.

Where are GFRP bars most commonly used?

GFRP bars excel in harsh environments: coastal/marine structures (jetties, seawalls), highway bridges with de-icing salt exposure, chemical plants, water treatment facilities, tunnels, parking structures, and any application where corrosion is a concern.

Can GFRP bars be bent on-site like steel?

No, GFRP bars cannot be bent on-site. They must be pre-fabricated to the required shape during manufacturing. This requires careful planning and coordination with your NJVB technical team during the design phase.

What diameters are available?

NJVB manufactures GFRP bars in standard diameters ranging from 4mm to 25mm, suitable for various structural applications. Custom diameters may be available upon request for large projects.

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