Product Introduction of Round manhole cover
Cast ductile iron manhole covers can be designed into round, square, rectangular, double-triangular, etc. Among them, round manhole covers are the most common. Different shapes are just different shapes, there is no other difference. If you consider the space inside the manhole and facilitate the staff to enter and operate inside, it may be designed as a square or a rectangle. Then the shape of the manhole cover will be the same as the manhole.
The urban road generally adopts circular manhole covers because they are not easy to tilt, which effectively protects the safety of pedestrians and passing vehicles. Another reason for adopting a circular design is that the diameter of each round manhole cover is the same. In this case, when the vehicle passes through the manhole cover, regardless of the direction of rolling, the diameter of the ductile iron manhole cover is wider than the lower wellhead, so that the ductile iron manhole cover will not fall into the well.
The round manhole cover has 2 additional features:
1. No matter from what angle, the round manhole cover will not fall, this can ensure safety. If it is a square or rectangular manhole cover, because the length of the diagonal is longer than the side length, when the manhole cover is erected and then rotated by a certain angle, it may fall.
2. The round manhole cover can be rolled, which is convenient for the staff to carry.
