FRP manhole covers

FRP manhole covers are composite manhole covers made of glass fiber and its products (such as glass cloth, tape, felt, yarn, etc.) as reinforcement materials and synthetic resin (such as unsaturated polyester resin) as matrix material. This material combines the high strength of glass fiber and the corrosion resistance of synthetic resin, making it lightweight, high-strength, corrosion-resistant, anti-slip, and anti-theft.

Performance features

Lightweight and high strength: The weight of fiberglass manhole covers is only about 1/4 of traditional cast iron manhole covers, but its compressive strength is equivalent to Q235 steel, and its compressive strength is more than twice that of C30 concrete.

Corrosion resistance: Fiberglass manhole covers have excellent acid resistance, alkali resistance, and corrosion resistance, and are suitable for harsh environments such as sewage, seawater, and salt spray.

Anti-theft performance: Since fiberglass manhole covers have no recycling value and cannot be stolen, the problem of theft is effectively eliminated.

Anti-skid performance: The surface is specially designed to increase friction and improve the safety of pedestrians and vehicles.

Aesthetics: The surface of the fiberglass manhole cover is smooth and can be customized in various colors and patterns to beautify the urban environment.

Long service life: The design life of FRP manhole covers can reach more than 50 years, far exceeding the manhole covers made of traditional materials.

Application Scenario

FRP manhole covers are widely used in the following fields:

Municipal roads: used for sidewalks, main roads, parking lots, etc.

Power communications: Suitable for inspection wells of underground facilities such as electricity, communications, and gas.

Rainwater drainage system: used for rainwater sewage wells, underground pipeline inspection wells, etc.

Special environments: such as chemical plants, sewage treatment plants, gas stations and other places that require corrosion resistance and explosion protection.

Advantages and market prospects

Economical: Although the initial cost is high, the FRP manhole cover has low maintenance cost, long service life and significant overall economic benefits.

Environmental protection: FRP manhole covers have no metal structure, which reduces environmental pollution and is recyclable.

Market demand: With the acceleration of urbanization, the demand for fiberglass manhole covers is increasing year by year, and the market prospects are broad.