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Hot tap is a method of employing an under-pressured drilling machine to provide a branch off pipeline from existing main pipe. This is done via a coring process on existing operating pipeline without any interruptions to the flow of medium and system. Alstern has more than a decade of experience in this speciality.

Hot tap is also the first procedure in line stop, where the opening on the pipe allows line stop plug head (mechanical or inflatable) to be inserted.


  1. Branch off a new pipeline without affecting the operating system
  2. Convenient- Do not required draining of entire pipeline content to branch off
  3. Downstream interruption is avoided
  4. Cost effective
  5. No disruption to system operation


  1. Carbon steel, galvanised steel, stainless steel, ductile and cast iron
  2. Pipe diameter: Up to 48”
  3. Pipe medium: Water, oil based solvent, gas, steam, wastewater and fuel (Cold-Tap)
  4. Maximum operating pressure: 1,440 psi
  5. Maximum operating temperature: 300°C
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