The square sewer hatch for filling is made of galvanized steel, the square shape of the hatch allows for hidden installation on sites that are paved with paving stones, paving slabs or terrace slabs. Steel sewer hatches for filling can be used in pedestrian zones and in places where light vehicles may pass. Steel technological hatches can be filled with concrete as a topcoat. To fill technological steel hatches, paving stones or tiles can be used, which are lined with paths, platforms and other areas of the landscape. The required service load class A or B is achieved provided that the lower part of the hatch cover is filled with concrete of the appropriate grade (C 35/45). The lifting of the technological steel hatch cover is carried out using special screw wrenches that come with the hatch.
