EN124 Ductile Iron Manhole Covers: A Complete Selection Guide

Selecting the right manhole cover is critical for infrastructure safety and longevity. The EN124 standard provides a clear classification system that helps engineers and procurement teams choose the appropriate cover for each application.

Understanding EN124 Load Classes

The EN124:2015 standard defines six load classes, each designed for specific traffic conditions:

Class	Load	Application
A15	1.5 tons	Pedestrian zones, gardens
B125	12.5 tons	Sidewalks, residential car parks
C250	25 tons	Roadside verges, parking lots
D400	40 tons	Highways, main roads
E600	60 tons	Industrial areas, docks
F900	90 tons	Airport runways, special applications

Why Ductile Iron?

Ductile iron (also known as spheroidal graphite iron or GGG50) offers several advantages over traditional cast iron:

• Superior strength: 3x stronger than gray cast iron
• Ductility: Bends rather than breaks under extreme load
• Corrosion resistance: Better performance in harsh environments
• Lighter weight: Reduced handling and installation costs

Key Selection Criteria

1. Traffic Load

Always select a cover rated for the maximum expected load, not the average. A D400 cover on a highway ensures safety even when overloaded trucks pass over it.

2. Clear Opening Size

The clear opening determines access for maintenance personnel and equipment. Common sizes include 500×500mm, 600×600mm, and Ø700mm.

3. Security Features

In areas prone to theft, choose covers with locking mechanisms. Our square locking covers feature advanced anti-theft designs.

4. Noise Reduction

Covers with rubber gaskets reduce noise from traffic vibration, essential in residential areas.

Conclusion

Choosing the right EN124 manhole cover ensures safety, longevity, and compliance. At Xi'an Guanxing Casting, we manufacture the full range of EN124 certified ductile iron covers, ready for global delivery.

Contact us at Frank@xa-cast.com or WhatsApp +86 157 0290 3071 for a quotation.