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How are the levels of ductile manhole covers divided?

2019-11-28 http://fisherbuses.com/news/390.html

Our manhole covers can be divided into many types, including single-layer, double-layer, cast iron manhole covers , ductile iron manhole covers , composite manhole covers, cement concrete manhole covers, etc. Today we introduce to you nodular manhole covers , what is the grade What about the division? Let's introduce it to everyone.
The mark of the spheroidal manhole cover is set to light-weight Q, and it is forbidden for motor vehicles to enter green areas, ramps, bicycle lanes or sidewalks. The common type is the road or parking place for vehicles passing by P, Class 10 and below. The heavy one is Z, which is a road or parking place for motor vehicles. Manhole covers are used to cover defenses on roads or deep wells in homes to prevent pedestrians or objects from falling. Generally divided into circular and square, in the urban road management, generally used circular, because the round manhole cover is not easy to tilt, can better protect the safety of pedestrians and vehicles. The use of circular is mainly considered that the diameter of the circular manhole cover through the center of each circle is the same, so if the manhole cover is rolled up by the passing vehicle, because the diameter will be slightly larger than the wellhead below, Wide, the manhole cover will not fall into the wellhead.

The above content is some of the relevant knowledge we introduced for you. I hope my introduction will be helpful for your purchase and use. If you want to know more product information, please continue to pay attention to our website. We will Constantly updated product knowledge, you can also call to consult, we will try our best to meet your needs.

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