A lot of friends, in fact, are a little strange to the double hole cover of nodular cast iron. Why? Because what you see, when you see the surface of the manhole cover well cover, but you can't see the next layer of the well cover, because you have nothing to do with it, of course, you won't put the well cover on the next layer of the well cover, is it a new or sewer? This is very normal, because the focus is the focus, which line do you make You will notice which industry, and you do not do manhole cover, of course, you will not notice that manhole cover should have several layers, but small make-up is not enough. I think it is necessary for Xiaobian to have a deep understanding of the well cover industry, especially for the double well cover product. Here are some reasons:
Nodular cast iron manhole covers are increasingly used for people's safety. Every year when the rainy season comes in June and July, we will hear a lot of news about what the little girl has been swallowed and the children have fallen to the wellhead. If the manhole cover is stolen. After the manhole cover is stolen, a dark window will be directly exposed below, and the window of the black hole has a great security risk. So how to solve this problem?
This is one of them, safety, is a well cover, because it needs functions, for example, we have a hot well cover (a) hot cover municipal sewer well cover, so the real temperature of the hot well cover is very high, you can think about, if the heat of a well cover is very high, how can we solve this problem when it's hot? If you think about it carefully, if a well cover is very high, the temperature of the child walks from the side, It will burn in the autumn of one thousand years. The burn is very serious. So in order to solve this problem, double caps are used. A layer of sealing cap is added under it, which can completely play the role of heat insulation. In this case, the temperature is higher than the normal temperature, and the temperature is very high. Therefore, the problem of high temperature is solved.
Nodular cast iron manhole covers are widely used in all walks of life, so in the construction, what needs to be paid attention to? The following small series for you to explain.
Placing the right cover will sink, move the cover, make abnormal noise, the cover surface is not marked, and simply slide on the cover. All these factors need to be paid attention to. How to pay attention to them when installing?
For example, there are stripes and handwriting on the surface of nodular cast iron manhole cover, and the building shall not damage the surface stripes and fonts in detail. You can find a small piece of thin iron or the surface of manhole cover and spray a layer of leaching table, or cover the cover with plastic film to prevent the cement from adhering to the opposite surface interests, damaging the fonts or conflicts on the surface.
The above is a detailed introduction to the innovation direction of Shandong ductile iron manhole cover. For more information, please click http://www.kpp647.com