Why we can not easily tilt the ductile iron manhole cover on the road? Let's take a look.

Now with the construction of the city, the application of ball-cap manhole cover is also more and more, and it also occupies a very important position in the market. Many underground power tunnels of our power facilities are used for installation and protection. So its quality is related to the quality of our application. Now our market products are generally round spherical ink covers or square spherical ink covers are mainly two, in our road installation round covers it is not easy to tilt, but also can effectively protect people and vehicles through Its strength is very good. Even some of our large vehicles are not damaged by tomatoes or tilted even after they are crushed. They have very good environmental protection and are better protected in any hot working environment Our underground power equipment, effective fire safety.