Resintuff 700mm x 700mm Triangular Manhole Cover, 40 Ton D400 Rating

700mm Composite Manhole Cover

The Resintuff Triangular Manhole Cover provides a high-strength access solution for municipal and commercial drainage systems. Engineered from heavy-duty composite materials, this unit meets the D400 load requirement for heavy traffic. The 700mm square frame houses a double-triangular lid design to ensure stability under constant vehicle loading.

Built for the Job

This access solution is designed for areas where traditional cast iron covers are prone to theft or corrosion. It serves as a reliable capping for sewer lines, inspection chambers, and utility pits in high-traffic zones. Contractors select this specific triangular configuration because it eliminates the rocking movement often found in square covers. The composite construction offers a significant weight advantage over metal alternatives, reducing the risk of back injuries during installation or maintenance cycles. It performs exceptionally well in environments exposed to chemicals or high moisture levels where rust would typically compromise structural integrity.

• Carriageways and main roads with heavy vehicle traffic.

• Industrial yard drainage systems and commercial loading bays.

• Public utility access points for water and telecommunications.

Product Highlights

D400 Load Capacity

The unit supports up to 40 tonnes, making it suitable for highways and heavy industrial use.

Anti-Theft Engineering

• Zero scrap value discourages theft common with cast iron.
• Integrated locking mechanisms secure the lid to the frame.

Non-Rock Design

The double-triangular geometry provides three-point suspension to prevent noise and wear.

Technical Specifications

What’s Included

• 1 x Composite Triangular Cover

• 1 x Heavy-Duty External Frame

On-Site & Workshop Notes

• Ensure a minimum 200mm deep concrete bedding for the frame in heavy traffic areas.

• Clean the seating area of the frame thoroughly before dropping the cover to prevent rattling.

• Check that the orientation of the triangular sections matches the direction of traffic flow.

• Use standard lifting keys for removal; the material does not require specialized hydraulic lifters.