Product
Fiberglass Manhole Cover — Lightweight FRP Manhole Cover Solutions
Engineered fiberglass reinforced plastic manhole covers that combine exceptional strength with lightweight handling. EN124 certified for load classes from B125 to E600.
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Installation Process
Size Options
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Overview
Premium Fiberglass Manhole Covers for Modern Infrastructure
Our fiberglass manhole covers are manufactured using high-grade glass fiber reinforced polymer (GFRP) composites through precision compression molding. This advanced process delivers up to 60% weight reduction compared to cast iron while maintaining exceptional load-bearing capacity up to EN124 E600 (60 tons).
The inherent corrosion resistance makes these covers ideal for wastewater treatment plants, chemical processing facilities, coastal installations, and any environment where rust and chemical degradation are concerns. Fiberglass will not corrode, rust, or deteriorate when exposed to moisture, sewage gases, or chemical agents.
Each cover is engineered to meet specific project requirements with customizable sizes, load ratings, colors, and surface textures. Anti-theft locking mechanisms, slip-resistant surfaces, and optional gasket sealing for odor and water ingress prevention are all available — making these the preferred choice for municipalities and infrastructure developers worldwide.
Specifications
Ficha Técnica
Specifications Diagram
Dimensions
Please refer to the dimensional drawing for detailed measurements and installation clearances.
| Parameter | Value |
|---|---|
| Material | Glass Fiber Reinforced Polymer (GFRP) / Fiberglass |
| Manufacturing Process | Compression Molding / SMC (Sheet Molding Compound) |
| Load Rating (EN124) | B125 / C250 / D400 / E600 |
| Available Sizes (mm) | 300x300, 450x450, 600x600, 750x750, 800x800, 900x900, 1000x1000 |
| Weight Range | 8 kg – 65 kg (depending on size and load class) |
| Surface Finish | Slip-resistant textured (R11/R12 anti-slip rating) |
| Color Options | Black, Gray, Green, Yellow, Blue, custom RAL colors |
| Service Temperature | -40°C to +120°C |
Features
Características y Ventajas
Key Features Overview
Lightweight & High Strength
Up to 60% lighter than cast iron while matching or exceeding load capacity. A 600x600 D400-rated fiberglass cover weighs approximately 35 kg compared to over 80 kg for cast iron.
Corrosion & Chemical Resistant
Impervious to rust, corrosion, and chemical attack. Ideal for sewage systems, wastewater plants, marine environments, and chemical processing facilities where metal covers fail prematurely.
Anti-Theft Design
Integrated locking mechanism with stainless steel hardware prevents unauthorized removal. Zero scrap value eliminates the theft incentive common with cast iron covers.
Slip-Resistant Surface
Textured anti-slip surface pattern meets R11/R12 slip resistance standards for safe pedestrian and vehicular traffic even in wet conditions.
Customizable Options
Available in multiple sizes, load ratings, and colors. Optional accessories include gaskets, ventilation slots, and custom logos or markings.
Long Service Life
30+ year design lifespan with zero maintenance required. UV-stabilized resin system prevents long-term degradation from sun exposure.
Applications
Where It's Installed
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D400/E600 rated covers for roadways, highways, and heavy traffic areas
Drainage Manhole Cover Composite: Complete Guide for Drainage Systems
Corrosion-resistant covers for sewage treatment plants and drainage systems
Composite Manhole Cover Installation Guide — Step by Step
FRP covers for factories, warehouses, and industrial zones requiring chemical and corrosion resistance.
