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Roads, Infrastructure & Utilities

GRP Manhole Liners

Corrosion-Resistant GRP Manhole Liners for Underground Infrastructure Protection

RIGID Fiberglass manufactures high-performance GRP manhole liners engineered for rehabilitation, protection, and enhancement of underground sewerage, drainage, and utility infrastructure systems. Designed for highly corrosive underground environments, our GRP liners provide seamless corrosion protection, structural reinforcement, and long-term durability for existing manholes and chambers. The smooth internal surface improves hydraulic flow efficiency while minimizing maintenance requirements and extending infrastructure lifespan.

Key Features

Excellent corrosion resistance
Seamless protective lining system
Lightweight and durable construction
Smooth internal hydraulic surface
Long operational lifespan
Reduced maintenance requirements
Fast and efficient installation
High chemical resistance

Applications

Sewerage manholes Wastewater infrastructure Drainage chambers Underground utility systems Industrial sewer networks Municipal infrastructure rehabilitation

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Technical Data

Product Specifications

Material	GRP / FRP Composite
Liner Type	Circular / Rectangular
Resin Systems	Polyester / Vinyl Ester
Corrosion Resistance	Excellent
Surface Finish	Smooth Hydraulic Finish
Operating Temperature	Up to 100°C
Wall Thickness	Customized
UV Resistance	Available
Joint System	Laminated / Mechanical
Installation Method	In-Situ / Preformed
Design Life	20–30 Years
Applicable Standards	ASTM / BS EN / Utility Standards