Test pits, maintenance pits, service pits & roller covers

We are a manufacturer of prefabricated pits and workshop equipment

HDC prefabricated pits are installed by a trained and experienced factory team. A high level of quality assurance is achieved through joint acceptance of this installation. The prerequisite for this is optimum prior construction planning and an assessment of the structural conditions by our service personnel.

With us you get everything from one source. This gives you guaranteed budget and planning security.

Our carefree packageBudget, planning and deadline security

Tender specification texts

Request our tender texts here:

DIBt approval

DIBt Zulassung für Fertiggruben

► Information request

Strengthening the region

NRW Wappen

Company from NRW

HDC prefabricated pits: The advantages at a glance

We manufacture only with the best quality and with the highest demands on ourselves. Regular in-house quality controls, with subsequent certification of each individual pit, ensure a consistently high quality standard.

Each individual HDC prefabricated pit is given a"life cycle record".


With a variety of optional accessories, you have the possibility to tailor your HDC prefabricated pit exactly to your needs.

The graphic illustrations show the "left" and "right" inside of the HDC prefabricated pit.


Convince yourself of this "on the spot" in our exhibition. Make an appointment with us and convince yourself of our products. A demo pit with all variants of the equipment options awaits you. Examine your future HDC prefabricated pit "live".

Here is your future workplace "to touch".



We are an innovative and craft-oriented company that provides you with everything from planning and manufacturing to installation and maintenance from a single source.


We are an innovative and craft-oriented company that provides you with everything from planning and manufacturing to installation and maintenance from a single source.

Our free service

We visit you!

Our mobile demonstration pit

In order to bring you even closer to our quality and product, we have developed a "mobile demonstration pit" with which we can visit you on site. In this pit we have installed the most different equipment variants.

Walk through your new pit today. We will visit you on your farm and bring the pit with us - of course without obligation and free of charge.
Arrange an appointment with us.

To the demonstration pit

Your individual prefabricated pit

The 3D pit configurator

The sale of complex products is greatly facilitated by a graphical representation. For this reason we have developed a 3D product configurator especially for this purpose. This allows us to display individual pit equipment "live" even during the planning phase.


Now also built-in cabinets (left/right) with "stainless steel" sliding door (optional) are available.

To the 3D pit configurator




Equipment of your maintenance pit

Our proposals for equipping the maintenance pit or workshop with oil dispensers, with and without oil management systems:

Logo lümatic (Hermann Lümmen GmbH)

About HDC Finished Pits

Floating work pit

In Mühlhausen, <ignore class="ignore-from-translation">HDC-Fertiggruben</ignore> has integrated three completely new work pits into the workshop of the company Regionalbus GmbH.

Read the complete article here

Zeitungsartikel Schwebende Arbeitsgrube

Cooperation with EUROPART

Our prefabricated pit was proposed by EUROPart - and we drove directly to the customer with our mobile demo model.

Learn more about the project here

Artikel über Fertiggruben, Stahlfertiggruben

Our partners

Further information about our partners can be found here.

Contact request

Are you interested in our prefabricated pits? You need further information?
Then we look forward to hearing from you:

Your way to us

Your prefabricated pits A-Team: Get to know us personally


Hermann Lümmen

+49 (0) 2241 26 47 18

Expert advice

Michael Krönig

+49 (0) 7121 26726 40
+49 (0) 1738077596

Zum Wäldle 11
D 72768 Reutlingen

Specialist advice/
Head office

Timo Thomas

+49 (0) 2241 26 47 18

Specialist advice/
Head office

Walter Biergans

+49 (0) 2241 26 47 18