Overcoming Challenges When Expanding Small Tubes


Tube expansion can be challenging regardless of the application. From inconsistent wall thicknesses to exotic materials, a lot of factors can influence the quality of an expansion. In smaller applications, there can be some additional complexity to the process which makes choosing the right expander more critical.

Overcoming Challenges When Expanding Small Tubes2023-02-02T10:43:32-05:00

How To Expand Welded Tubes


Expanding tubes after they have been welded can be frustrating for operators. If not rolled properly, tube material can build up and put stress on the weld. In extreme cases the tube material can build up so much that the expander can get stuck in the tube, delaying the job.

How To Expand Welded Tubes2022-06-13T13:01:44-05:00

Expanding Tubes In Heat Exchangers


Before you can start rolling, you will need to select the right expander for the job. Tube OD, and Wall/BWG will determine the size of the expander. However, there are some other factors to consider, such as tube projection, roll length, reach requirements, space constraints, and whether it’s minimum or average wall tubing.

Expanding Tubes In Heat Exchangers2022-10-05T12:02:58-05:00

Expanding Fire Tube Boiler Tubes


Firetube boiler tubes consist of an expanded and beaded tube end. The method for achieving a bead has advanced over the years to include both hand beading and single roll beading expanders. In order to ensure a proper bead, there are several steps that need to take place before expansion can occur.

Expanding Fire Tube Boiler Tubes2022-10-27T11:50:02-05:00

Materials, Tube Leaks, & Pre-Expansion Steps


In general, you want to roll to the lowest wall reduction possible where a tight tube to tube sheet joint can be achieved. The harder the material the less wall reduction required to obtain a tube joint.  You should always consult the manufacturer of the heat transfer vessel for specific information before undertaking any maintenance procedures.

Materials, Tube Leaks, & Pre-Expansion Steps2022-06-13T13:03:19-05:00
Go to Top