Heavy Duty D400 Ductile Iron Round Manhole Cover and Frame

Material: Ductile Iron GGG500-7 / QT500-7

Standard: EN 124-2 D400

Load Capacity: 40 Tons (Heavy Duty)

Design: Round cover with reinforced structural base frame

Surface Finish: Black Bitumen Anti-Corrosion Coating

Features: Anti-theft design, high-impact resistance, non-slip surface pattern

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Overview

Our professional-grade ductile iron manhole covers are designed to offer unparalleled durability and safety for urban infrastructure. Built to comply with the international EN 124 standard (D400 rating), these covers are capable of withstanding heavy vehicular traffic, ensuring long-term reliability for municipal road networks and highway projects.

Key Features & Benefits

Superior Material Quality: Crafted from high-grade ductile iron (GGG50), offering superior impact resistance and tensile strength compared to traditional gray cast iron.
Advanced Hinged Design: Features a robust integrated hinge, ensuring the cover stays securely attached to the frame. This not only facilitates easier one-person maintenance but also provides a powerful deterrent against theft and unauthorized access.
Safety-First Surface: The intricate, raised geometric pattern on the surface provides excellent skid resistance, preventing slips for both pedestrians and vehicles during wet or icy conditions.
Precision Engineering: Every unit undergoes rigorous load-testing to ensure a perfect fit between the cover and the frame, minimizing noise, vibration, and road surface displacement.
Corrosion Resistance: Finished with a high-quality black bituminous paint that protects against harsh weather conditions, chemicals, and oxidation, ensuring a long service life.

Why Choose Us?

As a specialized manufacturer, we offer direct-from-factory pricing that significantly reduces your procurement costs without compromising quality. Whether you are an infrastructure contractor or a distributor, our flexible production capacity allows for custom branding, specific size requirements, and bulk orders with fast lead times.

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