Performance Profile

Cable and pipe ploughing

- Flexible cable and pipe conduit maximum 280mm diameter per trench;
- Rigid pipes maximum 600mm diameter
  (relining in individual lengths of approx.
- Laying combinations of numerous pipes
  and cables possible in one operation;
- Even several lightening protection and/or
  cable line warnings strips can be installed
  in one work process where required;
- Laying depths of up to 225 cm;
- Back filling with sand for pipes and cables possible;
- Laying performance 1.000m to 5000 m per day;
- Ploughing is applicable in soul classifications DIN 2 to 6 (boggy soil to soll with loose rocks);
- Our ploughing systems can cope with slopes up to 70%.
See VIDEO Link

Horizontal directional flush drilling 

Especially in case there is a need for (undercrossing) underpassing streets, railways, flood-relief channels (Hochwasserkanäle), waters or the surface is not allowed to be damaged, there is no way for the plug.

With our advanced orizontal drilling machines (devices) having different versions  and performance parameters are we able to lay not only in town but also out of town PE-HD, steel and cast steel pipes with dimeters of up to 600mm and  lengths of up to 600m, rapidly and cost-effective.

Field of application
  • Underpassing waters, streets, rail ways;
  • Underpassing banks (scarps) and inclinations;
  • Protected landscapes;
  • Laying (of pipes and cables) in town including house connection lines.

Simplified description of the horizontal drilling method:

The method we apply for drilling is the controlled pipe propulsion, thereby dissolving softly the bottom set beds by using a water jet.

Pilot drilling: A rotative drilling head fixed at the rods (respectively a controllable boring bar with injection nozzles (for high pressure jets) and a transmitter for localizing the position, depth and inclination of the rotative head at each point in time) is drilling a tunnel into the soil. As injection suspension we use a mixture made of  clay (polymeren) and water. The soil will not be displaced but  compressed into the surrounding soil. Thereby we can go around obstacles or follow changes of the drilling line.  This kind of drilling we call pilot drilling.

The Enlargement: The second step contains of successive enlargement of the existing tunnel to a larger diameter than the pipe that is going to be pulled through. Thereby we use drillheads of several sizes, which enlarge the tunnel by liberating injection suspension through the injection nozzles.

The pulling of the pipe: After of by doing the last enlargement the pipe is pulled with a preceded enlargement- and pulling device. The drilling is going to be recorded by a drilling report.


Control cables
Electric cables
Telephone cables
High Voltage cables
Fibre optic cables

Cable protection pipes

Water pipes
Cast steel

Waste water pipes

Gas pipes

Custumer Suport 

We are ready to support you in Europe 

Your local partner:


Bulgariaplug Ltd

17th str. 4, 4202 Radinovo , Bulgaria


Ruhland, König & Co. Elektro GmbH 
Zieglstadl 18, 84098 Hohenthann, Germany
Phone: +49 (0) 8784 9600-0 Fax: +49 (0) 8784 9600-34

Romania (Sibiu)
Tel: +40 (0) 269 227994
Czech Republic (Prague)
  Tel: +42 (0) 266 712 343