Manhole covers from this manufacturer can be found in many countries (mainly in Europe).

Most of the manufacturer’s covers are made of metal

 

.
Their shape is either round

 

or square

 

. Round covers designed for sidewalks are often surrounded by a square frame to facilitate paving work

 

.

On most covers, the manufacturer’s name

 

or logo

 

appears.

No colored covers from this manufacturer were found, though one gilded cover exists on the site

 

.

City emblems appear on covers (usually due to municipal requirements)

 

.

In many cases, the purpose of the cover is not indicated. When it is, the function can be identified either by the consumer’s name

 

or by the shape of the cover

 

.

The year of manufacture is generally not shown.

Standards
The European Standard EN124 and its associated load classes are found on many covers, with the most common classes being E600 and D400

 

.
As befits a German manufacturer, many covers also display the German MPA standard

 

as well as DIN standards

 

.

Typical Covers
This manufacturer produces many covers with backgrounds of grouped horizontal and vertical lines

 

, as well as covers with a circular ring containing decorations

 

, and covers with backgrounds of circles composed of squares

 

.
Among the drainage covers of this manufacturer, one can find covers with straight drainage slots

 

or wavy ones

 

, as well as drain strips

 

. There are 51 manhole covers in the site that are made by the Manufacturer
Click for the 51 covers made by Hydrotec (Of these, 5 are best covers)