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What is Composite Manhole Cover?

9/15/2021

As the name implies, a manhole is a valve that is used to cover the surface of a manhole to prevent people or objects from falling into the manhole. In recent years, composite manhole valves have been able to replace iron or cast iron valves for many reasons. One of the main reasons they were difficult to lift and install was because of their heavy weight, which damaged both workers' necks and backs and increased installation costs.