Task Group 2: Coating Quality


Task group 2 will handle the issue coating quality. Recurrent discussions because of defects of the coating of steel pipes after pull-in during a horizontal directional drilling prompted this task group.



  Technical Leadership:   

    Marc Schnau, x-plan schnau engineering





First of all the task group shall analyse the current situation concerning the applied coating materials, testing methods and the regulations related in matters HDD technique. Furthermore it shall formulate measures/recommended actions that shall on the one hand secure the coating quality from the client’s point of view, and on the other hand help the horizontal directional drilling contractor to define and point out sources of defects and risks before taking over a pipeline (often provided by client or a third party).


Task Group Member:

  • Francois Gandard, Optimum Trenchless Engineering
  • Wolf Schrader, TDC International AG
  • Jorn Stoelinga, LMR Drilling GmbH
  • Hans-Jürgen Kocks, Mannesmann Line Pipe GmbH
  • Dr. Thomas Löffler, DENSO GmbH
  • Stephan Birtner, Westnetz GmbH
  • Stefan Wittke, TDC International AG
  • Marco Warkotz-Gruber, BKP Berolina Polyester GmbH & Co. KG



Drilling Contractors Association (DCA)
Charlottenburger Allee 39
D-52068 Aachen

Phone: +49 - 241 / 9019290
Fax: +49 - 241 / 9019299

Technical Guidlines

In order to ensure a high quality standard in the implementation of HDD projects, the DCA has issued a technical guideline, which is now available in its 4th edition in three languages, German, English and French.


DCA Sponsorship Award

The Drilling Contractors Association (DCA-Europe) aims to promote the new generation of academics in the field of Horizontal Directional Drilling.




in cooperation with 


 logo bohrmeisterschule 2017


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