Composite Round Manhole Covers

Product Features: Stable quality, high compressive strength, durability, and environmental friendliness.
Resin composite manhole covers (also known as polymer FRP/GRP composite covers) are advanced products manufactured using glass fiber reinforcements (e.g., fiberglass cloth, tape, felt, yarn) combined with synthetic resin matrices. Key components include unsaturated polyester resin, fillers, initiators, thickeners, low-shrink additives, film-forming agents, pigments, and reinforcing materials. Produced via high-temperature, high-pressure single-molding technology, these covers exhibit high polymerization density, exceptional impact resistance, tensile strength, abrasion resistance, corrosion resistance, rust-proofing, pollution-free properties, and minimal maintenance. They are two-thirds lighter than traditional cast iron covers.

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Tags:

Composite Resin Series

Product Description

Manhole Covers - Superior Strength, Durability, and Aesthetic Appeal

Key Product Advantages:

Exceptional Strength

Compressive, Flexural, and Impact Resistance: Designed to withstand heavy loads and impacts, offering excellent toughness and reliability.

Aesthetic Design

Elegant Surface Patterns: Customizable colors and patterns enhance the visual appeal of urban landscapes, seamlessly integrating into various settings.

Lightweight & Easy Installation

One-Third the Weight of Traditional Iron Covers: Easy to transport and install, reducing labor costs and time required for maintenance.

Anti-Theft Features

Non-Recyclable Material: Designed to prevent theft due to the non-recyclable nature of the material. Optional locking mechanisms are available for added security of underground assets.

Extreme Weather Resistance

Wide Temperature Range: Performs reliably in temperatures from -50°C to +300°C, thanks to advanced materials and production techniques.

Long-Lasting Durability

Corrosion & Wear Resistance: Withstands acid, alkali corrosion, and daily wear and tear, ensuring a long service life with minimal maintenance.

Ideal Applications:

Our manhole covers are designed for use in various environments:

Urban Roads & Sidewalks

Municipal Engineering Projects

Parks and Squares

Residential Communities

Industrial Zones

Transportation Hubs (Stations, Airports)

Other Public Spaces

Primary Service Providers:

Our covers are essential for key infrastructure and services:

Water Supply, Drainage, and Sewage Systems

Power Grids, Streetlights, and Telecommunications (Telecom, China Unicom, Cable TV)

Transportation Signals & Military Cable Networks

Heating, Gas, Natural Gas, and Oil Pipelines

Airports, Docks, Ports, Landscaping, Real Estate Projects

Load-Bearing Grades & Application Zones:

Choose the right load-bearing grade based on your specific needs:

Group 1 (Minimum Grade: A15): Green belts, sidewalks, pedestrian zones, and areas closed to motor vehicles.

Group 2 (Minimum Grade: B125): Sidewalks, non-motorized lanes, car parks, underground parking lots.

Group 3 (Minimum Grade: C250): Residential areas, alleyways, light vehicle zones, and areas near curbs.

Group 4 (Minimum Grade: D400): Urban roads, highways, and expressways.

Group 5 (Minimum Grade: E600): Freight terminals, ports, airports, and heavy-duty zones.

Group 6 (Minimum Grade: F900): Airport runways and extreme load-bearing areas.

Dimensions & Load Class:

Diameter: Ø300mm to Ø1000mm

Load Class: A15 to D400 (EN 124 Certified)