Composite Manhole Covers
Key Features:
- Lightweight: Compared to conventional material, it is lightweight for easy handling and installation.
- Resistance to Corrosion: In all conditions, including moisture, chemicals, and other corrosive agents.
- Non-Conductive: Ensures safety in areas with electrical hazards.
- Customizable: Structural composite manhole covers are offered in a range of sizes, shapes, and load capacities.
- Low Maintenance: Build to last with minimum maintenance requirement
Specifications
| Specification | Details |
|---|---|
| Material | Fiber-reinforced composite |
| Standard Sizes | 600mm, 700mm, 900mm (custom sizes available) |
| Shape Options | Round, Square, Rectangular |
| Load Capacity | A15, B125, C250, D400 (per EN 124) |
| Surface Design | Non-slip, Patterned, Logo/Branding options |
| Color Options | Black, Grey, Green (custom colors available) |
| Locking Mechanism | Bolted, Self-locking, Anti-theft |
Mechanical Composition
| Mechanical Property | Value |
|---|---|
| Tensile Strength | 100-150 MPa |
| Compressive Strength | 200-300 MPa |
| Flexural Strength | 100-200 MPa |
| Impact Resistance | High |
| Fatigue Resistance | Excellent |
| Abrasion Resistance | Superior |
Chemical Composition
| Component | Percentage Composition |
|---|---|
| Fiberglass | 50% - 70% |
| Resin (Polyester/Epoxy) | 30% - 50% |
| Additives | ≤ 5% |
| Color Pigments | ≤ 2% |
Industrial Use of Composite Manhole Covers
- Urban Infrastructure: Urban pedestrian areas, parks, and residential streets, where weight and ease of installation are critical.
- Telecommunications: It is particularly suitable for covering up underground communication cables and electric conduits because of their insulating capacity.
- Chemical Plants: It is applicable in environments that undergo exposure to chemicals and deliver long-term, corrosion-resistant performance.
- Water Treatment: Sewage and water treatment facilities are provided with a corrosion-resistant, lightweight solution.
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FAQs
Which advantages do the composite manhole covers present compared to the classical grey cast iron covers?
Composite manhole covers are much lighter in weight and consequently easy to handle and to fix with much less effort. Besides them carrying a much lighter weight compared to cast iron, the composite manhole covers are corrosion-resistant, non-conductive, and require less maintenance compared to the traditionally used cast iron manhole covers.
Are NKM International's composite manhole covers customizable?
Yes, composite manhole covers from NKM International are highly customizable into different specifications in terms of size, shape, load capacity, surface design, color, and locking mechanisms to meet all your needs in a project.
What are the different load capacities available for composite manhole covers?
The composite manhole covers provided by NKM International come with different load capacities varying from A15, meant for pedestrian areas, to D400 for heavy vehicular traffic, in conformity to EN 124 standards.
Are manholes by NKM International composite in nature up to the standards?
In fact, each of the manholes made by the NKM International being of a composite nature suffice the standard of the world, including the EN 124, and hence they are the best in quality to meet numerous applications.
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Need Help?
We're Here for You!
Got a question or need assistance? Our team is ready to help you every step of the way. Reach out to us, and we’ll get back to you as soon as possible!