Manufacturing of plugs for heat exchanger tubes

If a tube is classified as severely damaged by an inspection, it must be either replaced or closed (= "plugged").

Common methods of sealing a tube are to weld shut or plugging the affected tube by using metallic plugs.

Delta Test offers a  system of plugging hat is quickly and easy to use. Furthermore it is possible to remove the plugs without further damage to the tube itself or to the heat exchanger.