Mandrel Tube Bending vs Crush Tube Bending

Mandrel Tube Bending Process

The Mandrel bending is a tube forming/ bending process where the tube is drawn over a mandrel and is bent with hydraulics around a radius die. A Mandrel is a piece of equipment that is inserted into the tube that helps the fabrication process. While it is being shaped the mandrel supports the walls and structure of the tubing. Mandrel bends ensure that you can have multiple angles and directions while not deforming the interior of the pipe. It ensures that the pipe is not deformation like in crinkle bends, roll bends, and press bends.

These types of tube forming processes are popular in aftermarket exhaust systems, gas and liquid-based piping, and other applications where you need the maximum flow of material in the tubing.

mandrel tube bending

Here you can see an example of mandrel tube bending on exhaust systems

Crush bending process.

In the crush bending process is when a tube is simply bent without any internal support. This is a common bending process that ends up “crushing” or crinkling the tube’s bending point. Crush bends have a faster turn around and are more cost effective in the long run.

Depending on the application of the tubing, mandrel or crush bending may be more appropriate. For jobs that require a strong structural integrity of the tube, or need optimal performance, mandrel bending is more appropriate. If neither of these factors matter, crush bending would work in its place.

Here at Detroit Tube Products, we can help you get the best type of tube fabrication for your next job. With over 100 years of experience, we can help determine what the best type of material and fabrication your tubing will need. When you need a professional mandrel bend solution, trust Detroit Tube Products! Finally, Contact us for more information on all our bending processes!

Tube Bending

Tube Bending

3/4" to 6" diameter bending capacity
Severe radius capability standard - all sizes
Close tolerance available
Large die selection
Bend all tubing materials and shapes.

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Tube Shaping

Tube Forming/Shaping


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