The manufacturer’s covers are made of metal and are round , square , or rectangular .
Round covers intended for sidewalks are often surrounded by a square frame to facilitate paving works .

No colored or gilded covers were found for this manufacturer.
City emblems appear on some of the covers .

In many cases the cover’s designation does not appear; in other cases it is indicated as follows: on water covers the word AGUAS (in various combinations) appears , CLAVEGUERAM on sewer covers , ENLLUMENAT on lighting covers (sometimes accompanied by an illustration of a streetlamp) , and so on.

The year of manufacture usually does not appear on the cover.

Standards
The European standard EN124 and its associated load classes appear on many covers, with B125 being a common load class. Many covers also bear the international BVQI - BVC standard , the Spanish UNE standard , and the Spanish AENOR standard . Standards used in other countries usually appear on covers installed in those countries.

Typical covers
Many covers feature a background of circles composed of lines and T-shaped symbols , or a background of squares .

Many covers are diagonal (square or rectangular covers composed of two triangles, where opening is done by lifting one of the triangles) .

Additional types of covers can be found at the bottom of this page. There are 34 manhole covers in the site that are made by the Manufacturer
Click for the 34 covers made by Fundicion Ductil Benito (Of these, 1 are best covers)