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Tube Tools by Powermaster Industrial

Retubing tools for heat exchangers, boilers, oil coolers and condensers. Construction tooling for heavy industry.

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A Series Tube Expanders

A Series tube expanders

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The A Series tube expanders are a straight rolling expander enabling tube expansion from 7/8″ OD up to 4.1/2″ OD. These expanders, furthermore are one of the most cost-effective expanders available worldwide. 


The design allows the rolls to be self-contained, and protected within the cage. This is the best mode of tube expansion when flaring is not necessary. Also with this in mind, available with various mandrel designs. Mandrels available: Short Series, Drum Type and Header Type. To clarify, consult the associated PDF link for more information.

Tube and Sheet Sizes:

  • 7/8″-4.1/2″ OD. larger sizes available on request.
  • Tube Sheet Range 1/2″-2.5/8″.
  • 3/4 and 1.0″Male Square Drive.
  • Consisting of 3 Straight rolls.
  • Powermaster Industrial Expanders are always complete with drum-type mandrels ready for work.
  • Header type and short series mandrels are available on request.

Follow the link below for the full PDF specifications:

Below is a short series mandrel set shown here on the AF3 series also available for the A series. These short series, consisting of up to 4 separate mandrels allow access into the tightest of tube sheets.