Stainless Steel Mandrel Bending

There are a variety of ways to bend stainless steel or other tubing materials.  These include heat-based bending, cold-based bending, free-form bending, or mandrel bending. In addition, to protect the strength of a tube and reduce wrinkling, mandrel bending is a preferred method used in medical, aerospace, or automotive tubing. Of course, think about the exhaust system on your car, truck, or motorcycle.  Where each bend occurs, you will notice the smooth curve of the being. Also, this is because mandrel bending is used to make exhaust systems. For quality performance and appearance, mandrel bending provides a strong, smooth, seamless bend in the metal alloy.

Mandrel Tube Bending

To determine whether a mandrel bend should be used, there are three main things to consider:

Tube bending

  1. A tight radius for the bend (316 stainless bends are on a tight radius for example)
  2. Tubing with thinner walls (aircraft applications)
  3. Materials that are harder to bend (titanium, Inconel)

If your stainless steel tubes fall under any of these three things, mandrel tube bending is necessary. In addition, mandrels are typically made from an aluminum-bronze alloy or a special chrome-plated tool. This also ensures that the mandrel is of the perfect size and material is very important.  There are three commonly used types:

  1. Plug Mandrel (tubing with heavier walls)
  2. Standard Open Pitch Mandrel (most commonly used)
  3. Thin Wall Mandrel (closed pitch mandrel)

304 and 316 Stainless Mandrel Bends

To ensure that you get the perfect stainless steel mandrel bending, request a quote online where professionals will know exactly what type of mandrel bend is needed for your application. Consequently, whether it’s a 304 stainless mandrel bend or a 316 stainless mandrel bend, we have you covered.

Ordering Custom Mandrel Bent Stainless Steel Tubing

Located in Michigan, Detroit Tube Products offers custom mandrel tube bending. Also, we have provided tube forming, shaping, or custom bending for low-pressure applications since 1911. Consequently, we provide services to a wide variety of clients. Check out this list for a sample of industries served. Finally, please contact us with any questions about your particular application.

Detroit Tube Products

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.

Learn More
Tube Shaping

Tube Forming/Shaping


Learn More



Learn More