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Do you know what types of manhole covers are there?

Company News-
Do you know what types of manhole covers are there?
1. According to the material, it can be divided into 4 categories:
A. Metal manhole covers: cast iron, ductile iron, bronze manhole covers, etc.;
B. High-strength steel fiber cement concrete manhole cover (cement-based composite material);
C. Recycled resin manhole cover (recycled resin-based composite material);
D. Polymer matrix composite inspection manhole cover, etc.


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2. According to the shape, it is generally divided into circular and square:
In the urban road administration, circular manhole covers are generally used, because the circular manhole cover is not easy to tilt, which can better protect the safety of pedestrians and vehicles.
In the countryside and cable wells, the square shape is generally used, which can better prevent the entry of liquids such as rainwater.
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