Boiler tube expanders

Powermaster Industrial Supplies LTD

Tel: (613) 764-0572

A Series Boiler Tube Expanders

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 boiler tube expanders available in short series

A Series Boiler 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:

Boiler Tubes - Efficiency

Commercial and industrial boilers offer numerous advantages for businesses. They are built to be more durable, requiring less maintenance and lasting longer. They have been proven to be more energy-efficient and reliable compared to residential boilers. These boilers are also customizable to cater to the unique requirements of a business, capable of providing substantial hot water or steam output, which makes them perfect for businesses requiring consistent power. Moreover, commercial boilers can aid businesses in lowering their carbon footprint, thereby enhancing their environmental impact.

1/8 of an inch of soot inside 2 ½ inch tubes can cause up to 47% heat loss, increasing fuel consumption by 8.5%. 


Saves Fuel Consumption 

Saves Substantial $$$ on Energy Costs 

Reduces Fires, Explosions & Blowbacks 

Reduces Odors and Noxious Fumes 

Reduces Mid-Winter Heat Disruptions 

Controls/Reduces Equipment Maintenance Costs 

Maintains Boiler Room Cleanliness 

Minimizes Air Pollution 


  1. oxides of nitrogen, especially as atmospheric pollutants: “targets to reduce NOx”
  2. “NOx emissions” 


Follow the link below to take you to all our boiler tube cleaning products available:

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