Manhole cover. Sewer manhole covers

In order to protect underground engineering communications from vandalism and littering, sewer manhole covers are mandatory installed on their manholes. Only in this case can pedestrians and motorists be confident in their safety.

Where sewer manhole covers are used, what they are made of

Sewer manhole covers are in demand in various facilities, starting from sewer and drainage systems, and ending with water supply and gas pipelines.

For a long time, sewer manhole covers were made exclusively of cast iron. This was explained by the fact that no other metal could compete in terms of cost, durability, and strength with this metal. And today, despite the large number of new and high-tech materials, manufacturers have not abandoned the use of cast iron, as the demand for these products remains high. Depending on the application area, cast iron covers are divided by the class of maximum permissible load.

In addition to this metal, polymer materials are increasingly used for the production of manhole covers. In terms of quality, they are not inferior to cast iron. They are also strong and reliable, but lighter in weight. Among the advantages, it is worth highlighting the low cost of polymers and polymer composites, their resistance to aggressive environments, long service life, as well as resistance to critical temperature changes. Aesthetic indicators should be highlighted as well, sewer manhole covers made of high-quality polymer materials can be produced in color. The use of special dyes ensures that the sewer manhole cover retains its color for a long time.

When faced with the need to purchase a batch of covers for sewer manholes, it is necessary to first determine the area of their application, and based on this, choose the type that is most suitable. Otherwise, sewer manholes will not be reliably protected, which poses a wide range of inconveniences. They are particularly associated with serious damage to vehicles and harm to the health of pedestrians.