C-Tech Group is composed of several companies that are industry leaders in process piping construction, plant maintenance services, insulation, scaffolding and piping/steel fabrication. Our headquarters are located in El Dorado, Kansas but we serve clients all over the nation.


  • ADM
  • Air Products
  • BG Products
  • BRB Contractors
  • Coffeyville Resources
  • Crossland Construction
  • Curbs Plus
  • Dondlinger & Sons Construction
  • East Kansas Agri Energy
  • GE Water
  • Holly Energy Partners
  • HollyFrontier
  • ICM
  • Kansas Ethanol
  • Key Construction
  • Koch
  • Magellan
  • MKEC
  • NCRA
  • NuStar
  • OneOK
  • TramCo
  • Valmont
  • ValuePlace
  • Wildcat Construction
  • Savage Services
  • Yuma Ethanol
  • Victory Energy
  • Great Plains Renewable Energy
  • ConocoPhillips
  • Phillips66
  • MTS Contracting
  • Badger State Ethanol
  • Cargill
  • BHA Group
  • Mid-Missouri Energy
  • PKHLS Architecture

“I wish to take this moment once again to share the appreciation from both myself, as Project Manager, and the NuStar Energy Central East for your contributions to our El Dorado Potwin Expansion project. It was through the combined dedicated and professional efforts of all individuals that made this project the success that it has been. It was truly a team effort from those within the NuStar organization as well as those contract and support individuals that have accomplished this project in the manner it was completed.

The overall project consisted of the construction of approximately 12.5 miles of new 10-inch diameter pipeline between El Dorado and Potwin, Kansas; the construction of new pipeline pump station facilities with VFD at our El Dorado, Ks pump station. We completed the project within the $16.1 million budget, and with no lost time injuries. It was a pleasure to work with each of you and we look forward to working on future projects with you in the future.”

- Dale E. Smith
Project Superintendent

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