Advantages of Ductile Iron Manhole Covers Compared to Steel

In the past, most manhole covers were made of steel. However, with economic development, ductile iron manhole covers have gradually become the preferred choice. This shift has raised questions: Why is ductile iron now favored? Today, as a manufacturer of ductile iron covers, we will provide a comparative analysis to determine which material performs better.   Ductile Iron: A Modern Material   While steel remains ...