At that time, the round nodular cast iron well cover, which was widely used at that time, was planned to be round not only for the sake of safety, but also to save more resources of casting materials compared with the square well cover. On the basis of sufficient safety, it can also save costs. What's the reason why it can't work with one stone?
Usually, on the road, we often see the round one. This is because the round well cover is more stable than the square well cover, which is not easy to skew and not solid, and can better protect the safety of pedestrians and vehicles.
The reason for deepening is that the length of each diameter of the round nodular cast iron manhole cover passing through its center is the same, so that when the manhole cover is rolled up by the passing vehicle, its diameter will be slightly wider than the wellhead below, and there will be no danger of the manhole cover falling into the wellhead.
In fact, the confirmation of the shape of the nodular cast iron well cover also involves the problem of the utilization rate of materials, because the utilization of the well cover depends on the size of the wellhead. If the area of the non essential devices is far beyond the square well cover of the wellhead, the application and practical value of the materials are obviously not suitable for the direct use of the round nodular cast iron well cover.
The square nodular cast iron well cover has been planned out。 It also has a specific application scale, that is, the use of villages and cable wells。 The square nodular cast iron well cover can better prevent the entry of rainwater and other liquids, so as to prevent the cable from being flooded。
After reading the above content, have you theoretically understood why the round ductile iron manhole cover is more widely used than the square one? As a "resident army" on the road, the ductile iron manhole cover really provides a great help for our day。 I hope that with the development of science and technology, its planning can go further。
This article is provided by Shandong nodular cast iron well cover finishing. If you want to know more, please consult us http://www.kpp647.com Website.