E600 double‑triangular ductile‑iron manhole cover KD20E features a 1800 × 675 mm frame footprint and a 150 mm deep self‑aligning frame, housing a 675 × 675 mm clear opening within two interlocking triangular leaves that hinge for one‑person access and lock securely via a safety handle. Manufactured to BS EN 124:2015 Class E600 for 600 kN (60 tonne) wheel loads, it is ideal for docks, ports, motorways, and other high‑traffic zones requiring durability, anti‑rock stability, and minimal maintenance.

Overview

Heavy‑Duty Certification

This cover is tested to BS EN 124:2015 Class E600, rated for sustained wheel loads of up to 600 kN (60 tonnes), making it suitable for extreme‑load areas such as docks, ports, and motorways.

Robust Frame & Opening

• Frame Footprint: 1800 × 675 mm, drop‑in self‑aligning design.

• Clear Opening: 675 × 675 mm, large enough for standard maintenance tasks.

• Frame Depth: 150 mm deep frame ensures even load distribution into surrounding substrate.

Key Features

• Double‑Triangular, Non‑Rock Leaves: Two interlocking triangular lids prevent rattling and displacement under traffic.

• Full‑Length Hinge with Safety Handle: Hinges allow the cover to open to 100°, remain captive in the frame, and lock securely for safe one‑person operation.

• Ductile Iron Construction: Made from spheroidal graphite cast iron (GJS‑500‑7) for superior tensile strength and corrosion resistance.

• Anti‑Slip Tread Pattern: Raised chequered surface exceeds PSRV 70 requirements to maintain traction in wet or oily conditions.

• Security Lock Option: Integrates with standard BS 7903 lifting keys and optional turnbuckle locks to prevent unauthorized access.

• Enlarged Frame Corners: Increased flange area dissipates loads to under 2.1 N/mm² bearing pressure, reducing point stresses on highways.

Technical Specifications

Benefits for End Users

Engineered for longevity, this cover resists deformation, corrosion, and unseating, ensuring over 30 years of service even in harsh marine and motorway environments. Its non‑rock design and enlarged frame corners minimize pavement wear and maintenance costs. Quick‑release hinge and safety handle enable fast, one‑person inspections, reducing labor time and traffic disruption.

Installation & Maintenance

The drop‑in frame self‑aligns in a prepared recess for a flush surface, simplifying installation and leveling. Routine upkeep involves inspecting hinges, lubricating lockpoints, and clearing debris from the tread pattern—tasks completed in minutes to minimize downtime.

Compliance & Quality Assurance

Manufactured in ISO 9001‑certified foundries and third‑party tested (BSI Kitemark, Highways England CD 534 v0.1.0), each unit carries CE marking and meets UK HA 104/09 highway specifications.