Mandrel Bending Services

3 inch mandrel bending services

Before you can talk about mandrel bending, you should first learn exactly what a mandrel is. Some tubes, depending on the material, can be a little weak. This means when they bend they may crack or wrinkle. A mandrel, when used in the tube bending process, is a steel rod or linked balls that are placed inside the tube which adds support to prevent damage.  Once it is added, the tube is run through a mandrel bender to bend the tube to the proper angle.

Different Types of Mandrel Bends

There are different types of mandrels used for making a mandrel bend. The first type is the plug mandrel. This is usually a solid rod that is used for most normal bends. The second type is the form of the mandrel. This type is another solid rod but with curved ends. The third type is the ball mandrel without cable.  These are steel ball bearings that are used for more precise bends. The fourth type is the ball mandrel with cable. Similar to the other type it just uses balls that are linked with the cable and used for precise bends. Finally, there is the sand mandrel. As you can guess, this is just sand packed in the tube for support during the bending process. Looking for 4-inch mandrel bends?

Learn more about mandrel bending compared to crush tube bending. Detroit Tube Products offers all types of mandrel bending. When it comes to tube bending and welding, we use the best method possible to achieve the best results. Also, we are very experienced mandrel benders and can offer mandrel bend solutions for your next project.

Mandrel Tube Bender Services

As an experienced mandrel bender, Detroit Tube Products will work with you to get the exact mandrel bending you need. A general rule of thumb is that there should be 25% of the wall thickness used for clearance. However, we’ve been known to do the nearly impossible. Our experts can produce critical and odd bends that most companies won’t even attempt. Typically, we’ll get a request for something like “I need 316 stainless bends on a tight radius without wrinkles,” or “Can you make a 3″ stainless part with 3″ radius bends?” The answer is yes of course! In many cases, we’ve examined a project and helped determine alternatives or suggestions on how to get the results needed.

Also, besides mandrel tube bending, we can provide additional tube-forming services such as expanding, swaging, beading, flagging, and much more. We use custom-made tube bending dies created by our engineers with decades of experience.  If you have any questions please contact us or if you’re pretty sure about what you want (like 3-inch mandrel bending), please fill out the request for quote form or, give us a call at 313-841-0300.

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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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