Retubing of Heat Exchanger

Ammus Engineers (Formerly Airfrige) has the technical expertise and a vast experience in re-tubing of shell and tube type heat exchangers. These Retubing of Heat Exchanger not only work as efficiently as the original equipment but also give trouble free performance for a significant period of continuous operation because the tube hole surface is safe guarded against damage in a reclaimed tube plate. Ammus Engineers (Formerly Airfrige) has the automatic equipment for the extraction of tubes from tube sheet without cutting of TEMA "E" type shell in shell and tube heat exchangers. In the past, Airfrige has successfully re-tubed propane condenser having 2300 nos. ¾” OD x 8500long tubes for a refinery service and so also 8000 nos. tubes for a steam condenser in a power plant application.


We are experts in thermal and mechanical design of heat exchangers and our customers naturally have the distinct advantage of our strong academic credentials and vast practical experience.

We provide design and engineering services for :

  • Single phase heat exchangers.
  • Double phase heat exchangers i.e. condensers and vaporizers in the geometric configurations of :
    • Shell and tube type heat exchangers
    • Economizers
    • Air fin coolers
    • Pipe in pipe heat exchangers

Refurbishment Services :
We provide services for :

  • Chemical cleaning of shell and tube side of heat exchangers using inhibited chemical reagents and thereafter neutralization and passivation.
  • Re-tubing of existing heat exchangers by removal of the old scrap tubes and replacement with new tubes without distorting the holes size or surface.
  • Modification/augmentation of the existing heat exchangers to suit the plant process parameters requirement.

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