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At STS, we manufacture sleeves, liners, tube inserts and ferrules in house. We have the capability to provide our customer with a custom product to exacting specifications, built for their exchanger, condenser or boiler. Our inserts can be purchased as a standalone or installed. The benefits of Sleeves, Inserts, Liners and Ferrules:

  • Restores tube loss

  • Renews tube ID

  • Prolongs the life exchanger

  • Enhances long-term reliability

  • Reduces plugged tubes

  • Increases efficiency

Our inserts are custom to your application and can be made from a wide variety of materials as well as Ceramic wraps. A few material examples:


  • Hastelloy

  • Monel

  • Admirality Brass

  • Nickel

  • Duplex

  • Titanium

  • Chrome Moly

  • Stainless

  • Inconel

  • Zirconium

  • Carbon Steel

  • Alloy 20

  • Copper Nickel

  • And more…



We utilize High Pressure Water to gain full sleeve-to-parent tube contact using Strain Control Sleeving from 1 inch to 48 feet. This method can be accurately controlled so that no damage occurs to the parent tube during the process. We write our own procedures, specific to your application and your job, detailing exactly how the repair technique will be carried out. 100% verification of each sleeve expansion is carried out on every project to insure 100% Satisfaction.

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