Water
Power and heat We maintain the water supply
Kraft&Wärme is your expert partner in the fields of pipe laying and pipeline construction. Our focus is always on the careful and, above all, responsible use of water as a vital resource. Municipal drinking water supply companies as well as water associations rely on the extensive know-how and many years of experience of our employees.
When laying water pipes, different methods as well as materials can be used, such as polyethylene (PE), cast iron or steel. We have all the necessary training certificates for metallic as well as non-metallic pipe materials. When it comes to selecting materials, we work with you to find the optimal solution based on the project requirements.
Open pipeline construction
The method of laying pipes in open trenches is probably the most traditional construction method in this field and has been one of our specialities for decades.
The Kraft&Wärme team is highly trained in the installation of all types and sizes of pipe materials. Of course, we also carry out repairs on existing pipes.
Trenchless pipeline construction
In addition to open pipeline construction, we also have extensive expertise in trenchless pipeline construction. Depending on the specific requirements, we select one of the following methods:
burst lining or expansion pulling.
The static bursting method is a cost-effective, modern method that can be used to increase the pipe dimension compared to the old pipe. We replace or renew pipes made of metallic or brittle materials, including PE, steel, grey cast iron, PVC or fibre cement, underground and without causing any vibrations.
The pull rod is inserted through the old pipe. At one end of the pull rod is a cutting head suitable for the respective pipe material, and at the other end is a hydraulically operated pulling device.
The old pipe is cut open as the rod is pulled. At the same time, a cone expands the cross-section. By cutting and expanding at the same time, it is possible to pull in a new pipe and increase the new pipe dimension compared to the old pipe.
Lining process with annular space.
In addition to burst lining, the lining process is also a cost-effective and, above all, simple method of renewing existing pipes, either in short or long pipes.
The first step is to clean, calibrate and inspect the pipe using a camera. A pull rope or pull rod is then used. The new product pipe, which has a smaller cross-section, is pulled into the old one. This leaves an annular space between the old and new pipes, which can also be filled if necessary.
The pulling forces acting on the pipe are precisely documented at all times to ensure that the permissible tensile forces of the pipe material to be pulled in are not exceeded.
- Short pipe lining: This method is used when the pipe installation pit is longer than the factory length of the pipes to be installed. The pipe connections are made in the construction pit itself.
- Long pipe lining: Here, the pipes are first welded into a pipe string outside the construction pit and then pulled in.
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Water pipes
