Competence in microtunneling

Welcome on our website!

We are glad to introduce you our company as well as our services and how we can successfully support, supervise and carry out your projects

Pipe technology

our pipe jacking can be used in different terrain conditions

Shaft technology

We have systems for all soil types and develop shafts up to 100 m deep

Special components

We give you solutions for problematic conditions aside!

At home in Bavaria, successful throughout the world!

Innovation and experience: For more than 40 years, Gollwitzer has stood for bespolke Pipe and Shaft systems. We develop and produce sophisticated one-off solutions for our partners throughout the world — reliably, flexibly, competently.

And that's not all. As a full service provider we support our customers throughout all phases of project development: from consulting and development via logistics to final implementation. 

Leonhard Gollwitzer, CEO

The benefit for our partners — a one stop shop for pipe and shaft solutions. Our Pipes are used throughout the world for supplying drinking water, oil, gas and electricity. They are also used in sewage disposal or as medium tunnels. Especially when it comes to shaft construction we develop innovative systems — for almost all soil types and possible uses.

In the past 40 years we have completed several thousand projects both at home and abroad.

Enclosed construction

Know-how in all areas



Jacking Pipes


Pipe design

Static calculation



Our range of services

We develop pipe and shaft systems for virtually every requirement.
We assist clients throughout the world with our know-how.
Our most important areas of expertise are:

Design and construction
Special services

Pipe technology
Solutions for every terrain

Achieving the goal with jacking technology

Our pipe jacking is used in all kinds of conditions: it works its way through rock, silt and clay but is also suitable for softer soil types such as gravel or sand. Using state of the art technology, our reinforced concrete pipes can achieve jacking distances in excess of 1500 m and curved trajectories up to a radius of 150 m. All that at an internal water pressure of up to 16.0 bar and an external water pressure of up to 5.0 bar.


Shaft technology
In-depth solutions

In-depth know-how

Our technical capabilities in shaft construction are virtually inexhaustible. We have systems for every soil type and develop shafts up to 100 metres deep - with a diameter of up to twelve metres. Both inside and out, the shafts are impermeable to 10 bar.

We provide our clients with competent porject support and offer single source solutions: design, consulting and engineering. We also lease and sell the complete range of production equipment, built-in parts or tools.


Technology transfer:
Solutions for the future

Getting there together
We are there for our clients: from the first consultation to project completion and beyond.
Because we support our partners with numerous services in the consulting - design - engineering arenas.

Special components
Solutions for every eventuality

Special challenges require special measures. 
Even with problematic soil conditions and difficult drilling conditions, we see to our customers competent side.

For this we have developed numerous special components

Intermediate jacking station
Bentonite lubrication system
neue Farben-Schmiernippel

In particularly difficult cases, we support our customers on site and jointly find solutions that are specially tailored to the respective drilling conditions and requirements.

Solutions for the whole world


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Our team

Leonhard Gollwitzer


Roland Ertl

Project Manager

Anatolij Krutowski

Project Manager

Tanja Dobmeyer

Assistant CEO


Please contact us! We have solutions for you!

Gollwitzer GmbH

Postfach 7
Hüttener Straße 67
D-92708 Mantel, Germany


+49 (0) 9605 924771-0


+49 (0) 9605 924771-29