![Multitop](https://www.swm.aco/fileadmin/swm.aco/images/Solutions/ACO_Manhole___Access_Covers/Multitop.png?fileVersion=1698153788)
Cast iron is renowned for its strong corrosion resistance against wastewater, de-icing agents, and environmental factors.
ACO Produces manhole covers and inserts using both gray cast iron (EN-GJL) and ductile iron (EN-GJS). These materials have distinct properties and applications, offering versatility and reliability.