Tel: (613) 764-0572

1262 Baker Road, CASSELMAN, Ontario Canada K0A 1M0

A Series Boiler Tube Expanders

A Series Boiler Tube Expander

A Series Non Flaring

The A Series Boiler Tube Expanders, is 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. Standard sizes 1.1/2″ to 3.0″ OD are always held in stock for immediate shipment.

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.

AF3 Series tube expanders available in short series

A Series Tube Expanders

The A series is an expander used to re-roll tube joints after manual beading. Also, used when tube joints need welding. Welding the tube end is completed on the first pass within the boiler. Whereas this procedure passes the heat from the tube end back into the tube sheet. Re-rolling the joint confirms the seal within the tube sheet hole.

Consult the PDF below for specifications:

Electric Tube Rolling Motors


The PTR-03 is the ideal electric rolling drive motor for all boiler tube expanders. Likewise, we can also supply pneumatic rolling motors.

Available in either 120 or 240-volt, 50/60 Hz.

Always in Stock, Purchase or Rental.

Product Quality

We work to high tolerances for all machining of expanders and associated equipment. This allows accurate expansion to achieve perfect sealed joints in tube sheets. Using the best tool steel and cryogenic processes for hardening and conditioning. Giving our tooling the optimum performance in the harshest surroundings.
We assemble each expander while checking the quality of the manufacture. Every individual tool is laser-marked with our name, Powermaster Canada. Also, we mark with the tube OD, wall thickness and expansion range. Expanders are then oiled bagged and boxed for shipping. Therefore, with our quality control and machining excellence, we supply a quality tool.

Beaded Rolled Tube Ends

A series expander used to re-roll joints