In today's accelerating urbanization process, the underground pipeline system, as the "lifeline" of the city, directly affects the operational efficiency of public infrastructure in terms of safety and durability. As the guardian of this lifeline, the choice of material and craftsmanship is crucial for the manhole cover. Among numerous manhole cover products, ductile iron manhole covers have become the preferred choice for municipal construction, transportation hubs, industrial parks, and high-end residential areas due to their excellent mechanical properties and reliable service life. This article will deeply analyze the core value of ductile iron manhole covers from two dimensions: product advantages and factory processing and production.