Network products

Trouble-free gas transmission: All thanks to hot tapping and plugging. 

For our customers, it’s crucial that our transmission network allows gas to flow as freely as possible. Normally, pipelines are taken out of service during more significant interventions in the gas transmission network, for example when new pipelines or valves are being installed, but this need not be the case. 

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We want to ensure smooth operation of the network, and for this we use hot tapping and plugging.

Hot tapping allows new piping to be tied into a network without interrupting the gas supply. This is done by welding a split tee onto the pipe which is then tapped under pressure.

Using so-called plugging devices, we can isolate parts of the pipeline under pressure. The gas is then piped though mobile bypass lines. The method is better for the environment, as it prevents gas losses and methane emissions.

Thus, over the last 45 years, we have been able to carry out around 1,500 jobs on high-pressure pipelines up to 100 bar – all without our customers even knowing.


  • Hot tapping up to DN 1400 and DP 100
  • Plugging (stoppling) up to DN 1200 and DP 100
  • Mobile bypass-lines up to DN 150 and DP 100
  • Qualified welding technology to DVGW GW 350
  • Certified to ISO 9001
  • Customer-specific solutions
  • Specific turn-key service

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Brochure / pdf / 1.90 MB

Ensuring the continuity of gas transmission and climate protection

Plugging (stoppling) techniques / component fabrication / welding methods, testing and inspection / mobile compressors / mobile natural gas supply, February 2020 (only in German)

Brochure / pdf / 1.16 MB

Hot tapping and plugging

Ensuring the continuity of gas transmission and climate protection, Data sheet, February 2020 (only in German)

Brochure / pdf / 627.96 KB

Temporary repair methods

Temporary repair clamps, Data sheet (only in German), March 2021

Repair work with no loss of natural gas

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Ensuring an uninterrupted supply of gas

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