AF3 Series Boiler Tube Expanders

AF3 Series
Boiler Tube Expanders



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To ensure uniformity in tube wall rolling and correct expansion without compromising on the mechanical integrity and also prevent leakages, Reliable Tube Expanders for Boilers made by Tritorc provide the following advantages:

  • Durable Heat Treated Components.
  • Corrosion resistant plating.
  • Increased Feed Angle.


Metric Imperial
Minimum Tube Outer Diameter Serviced:   22.22 mm  (⅞”) 0.875 Inch 
Maximum Tube Outer Diameter Serviced:    114.3 mm   (4.½”) 4.500 Inch  
Minimum Birmingham Wire Gauge Tube Thickness:   2  
Maximum Birmingham Wire Gauge Tube Thickness:   20  
Minimum Tube Sheet Thickness Serviced: 12.7 mm (½”) 0.50 Inch
Maximum Tube Sheet Thickness Serviced: 66.7 mm (2.⅝”) 2.625 Inch
Number of Expander Models: 318  
Number of Spare Roller Models: 235  
Number of Mandrels: 56  
Options available for 3 plain rollers and 3 flare rollers.
*Custom Sizes are available as per Customer Request

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Frequently Asked Questions

TAF3 Series Tube Expanders System

TAF3 Series

Note: The Dimensional Data relevant to the daigram above is available in the catalogue.

Parameters such as Tube Sheet thickness, Outer Diameter of Tube (using a BWG Tube thickness chart), Cage length, and Adjustable length are key factors to be known while selecting the tool.

With its Plain and Flare Rollers the tool can service thick tube wall thickness applications for process equipment such as Boilers. It is used for applications where a small number of tubes are to be expanded with flaring with a Time tested, durable design. With Tritorc’s Tools utilized for this purpose, one can overcome and face the following problems:

  • Repeated repairs
  • Cross Contamination
  • Thermal Losses
  • Heat exchangers Damage from alternate repair method

Yes, we provide bespoke solutions in such cases where the various Drive accessories developed are designed for optimum productivity and operator ease while ensuring operator safety and precision.

If the tool is utilized as per instructions under Ideal working conditions it may last up to 2000 usage cycles.