MANHOLE COVERS
Ductile Iron vs. Grey Cast Iron Manhole Covers: Which One Is the Better Choice?
What is the main difference between ductile iron and grey cast iron manhole covers?
Ductile iron generally offers higher tensile strength and impact resistance, while grey cast iron is more brittle and is normally selected for less demanding applications.
Which material is better for heavy-traffic manhole covers?
Ductile iron is commonly preferred for heavy-traffic applications because of its strength and impact resistance, but the finished product must still meet the required EN124 load class.