Ductile Iron Round Manhole Cover

The advantage of the round manhole cover:

1. The round manhole cover plate has a balanced stress, which can better prevent noise.
2. The round manhole cover plate has fewer edges and corners, which makes it more beautiful.
3. The round manhole cover has uniform stress, a higher bearing level than the square well cover. It is not easy to tilt, which can better protect the safety of pedestrians and vehicles.
4. The performance is better. Vehicles and pedestrians are passing through the manhole cover at any time. The length of each diameter of the round manhole cover passing through the center is the same, so no matter how it rolls up, it will not fall into the wellhead.