Now there are endless new products in the manhole cover market, but the most important thing is that there are three products occupying the main market share. The following is an analysis for you.
1. Ductile iron manhole cover, the nodular cast iron manhole cover is derived from the cast iron manhole cover, but it is much higher than the level of the cast iron manhole cover. This is because its nodular cast iron process makes the manhole cover itself a qualitative leap, and even reaches the cast steel on some data. Level, strong load bearing, good toughness.
2. Cast iron manhole cover, this kind of manhole cover refers to ordinary cast iron manhole cover, it is not as advanced as nodular cast iron manhole cover in terms of technology, but it is really used a lot in practical applications.
3. Composite resin manhole covers. Such manhole covers have occupied more and more markets with colorful, lighter materials and more anti-theft properties.

Others such as FRP manhole covers, steel fiber manhole covers, polymer manhole covers, Meiling manhole covers, etc. also occupy a small part of the market, it can be said that each has its own advantages.