Contact us!
+49 (0) 9605 924771-0
Write us!
info@gollwitzer-beton.de
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
Productionequipment
Shaftsystem
Jacking Pipes
Logistics
Pipe design
Static calculation
Planning
Consulting
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
- Pipe and shaft design
- Jacking stations (intermediate jacking stations)
- Bentonite lubrication systems
- Pressure pipes
- Inliners
- Special built-in parts
calculations
- Static calculations
- Sealing calculations
- Transport anchor
- Buoyancy calculations
- Radius calculations
- Jacking force calculations
Special services
- Consulting
- Engineering
- Supervising
- Joint Venture
- Leasing of production equipment
- Sale of production equipment
- Sale of installation materials
- Planning and provision of a temporary field factory / production facility
- Plant planning
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.
Benefits
- Realistic definition of costs and timescales (in the case of microtunneling/pipe jacking)
- Construction work largely unaffected by the weather
- Virtually undisrupted overground activities
- Hardly any vibration and building noise
- Low emissions
- Virtually no impact on road traffic
- No lowering of the water table required
- Existing pipes can be easily circumvented
- Can be used irrespective of building density
- Minimal impact on the environment and existing structures
- Little spoil, meaning litte requirement for disposal
- Can be used irrespective of building density
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.
Benefits
- Cheaper than the conventional construction method at depths greater than 20 metres
- Shorter building times means faster work progress
- Consistently high segment quality (because: prefabricated components in the prefabricated component factory, standardised work processes in production, easily manageable quality control)
- Increased building site safety
- Almost independet of weather conditions
- Use in the ground water
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.
- Know-how and technology transfer
- Technical specification
- Joint Venture
- Technical assistance with development, manufacturing and installation
- Static calculation of the pipes
- Employee training
- Support in the start-up phase
- Supervising production
- Quality control
- Factory planning
- Procurement of the means of production
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
- Subdivision of the jacking distance subsections
- To extend jacking distances
Inliner
- Corrosion protection
- Pressure rings with high load
- As a combination of two pipe systems
- Tensile resistant pipe section by welding the individual steel pipes
- Use primarily in internally pressurised pipe systems
Bentonite lubrication system
- For introducing bentonite between the jacking pipe and the surrounding earth
- To reduce frictional forces
- Bentonite as a lubricating and stabilising layer
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
GOLLWITZER INTERNATIONAL
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Our team
Anatolij Krutowski
Project Manager
- +49 (0) 9605 924771-13
- +49 (0) 170 3160 755
- krutowski@gollwitzer-beton.de
Contact
Please contact us! We have solutions for you!
Gollwitzer GmbH
Postfach 7
Hüttener Straße 67
D-92708 Mantel, Germany
Phone
+49 (0) 9605 924771-0
Fax
+49 (0) 9605 924771-29