The project was executed with the application of the relining method at long sections of the pipeline. The decision to use this particular method resulted from the necessity to limit all earthworks to minimum as the pipeline runs across populated areas. The technology applied by PeBeKa consisted in inserting PEHD 710x40.2 SDR 17.6 pipes, manufactured by KWH Pipe, into the existing pipeline and filling in the space between the two with a cement mixture. Decreasing the diameter of the pipeline did not reduce the flow rates because the hydraulic properties of the pipeline were considerably improved. The technology applied by PeBeKa is friendly for the environment, quick and effective.

Renovation of the sludge pipeline

Inwestor: KGHM Polska Miedź S.A. Hydrotechnical Division
Time of project execution: 2001

Additional technical data:

  • Length of the renovated section: 1200 m
  • Type of the relining pipe: PEHD 710x40.2 SDR 17.6 manufactured by KWH Pipe
  • Length of the relined sections: 40-1000 m


Poland, dolnośląskie Province,
Żelazny Most

Project outline

Located to the east of Polkowice and owned by KGHM Polska Miedź S.A., Żelazny Most is  Europe’s largest storage for copper ore floatation wastes generated by the company's mines and ore enrichment plants. With the diameter of over 14 km, the facility covers the area of more than 1400 ha.

In 2001 a decision was made to replace the old section of the steel DN 800 pipeline. Thanks to the smooth surfaces, uniform connections, flexibility and lightness of new pipes, the contractor succeeded in pulling a 1100-metre section of a DN710 pipeline into the DN800 pipeline. Applying the aforementioned technology, PeBeKa executed the project with the minimum possible impact on the environment.

For the performance of this contract, PeBeKa S.A. received the Limbur 2002 award in the category of The Project of the Year 2002 – Renovation.


Greatest challenges

Placing the new DN710 pipeline in the existing DN800 pipeline.

Key moment

Beginning the operation of slipping the DN710 pipeline into the DN800 pipeline.