Manhole covers are devices used to cover channels, preventing people and vehicles from falling in, while also protecting the internal facilities from damage.
When using manhole covers, be mindful of their load capacity and do not exceed their carrying capacity to avoid any accidental incidents.

There are many types of manhole covers, and the specific choice should be based on actual needs, such as load capacity, size, and material.

The installation of manhole covers should be secure, with no movement or rocking, to ensure safety.

Manhole covers can also be used in municipal construction and urban maintenance, maintaining the city's infrastructure.
For the maintenance of manhole covers, attention should be given to rust and corrosion prevention to extend their service life.