Covers, gratings, and frames are made of cast iron by die casting processes.
Covers, gratings, and frames are used for the protection and closure of manholes, inspection chambers, drains, manholes for water adduction chambers, sewerage and water supply installations, connection cahmbers in sewerage, gas, electricity, telecommunications networks, for access to valves, hydrants, e.a.
The assembly consists of the fixed element (frame) and the movable element called the cover or grating, used to cover and/or close the chamber.
The frameis fixed and has the role of a support surface for the cover or grating used.
The location and load class of the covers comply with the provisions of the EN 124:2015 standard. According to this standard, the covers and gratings are divided into the following classes: F900, E600, D400, C250, B125 and A15.
