Bend stainless steel pipes

Stainless steel tubes are easier to bend than expected with the material. Within the outer diameters of six to 28 millimeters, the draw bending is applied. Stainless steel pipes are usually too hard for impact bending and prone to unclean bending results.

Pulling bending at stainless steel

Bending machines with bump "push" the bend into the inserted metal tube and "bump" it from the inside radius side to the outside. This bending technique is very suitable for softer metals such as copper, not for hard metals such as stainless steel.

During drawing bending, the stainless steel tubes are clamped on one side in a bending segment. The counterbearing is the so-called Biegeschuh. The application of force is evenly distributed over the upper side of the bend and the stainless steel tube increasingly "folds" into the bending angle. Upon further "pulling" of the bending segment, the tube is pressed continuously and piece by piece on the round bending support.

Bend stainless steel tubes in the drawing process

  • stainless steel pipes
  • Possibly fine gravel sand
  • Pull bending pliers or
  • Draw bending machine
  • Flex or hacksaw

1. Cut the pipes

Bring the stainless steel tubes to be bent to the required design or assembly length before bending with a flex or hacksaw.

2. Open the bending machine or pliers

Open the bending machine by opening the handle to clear the way to the bending element.

3. Insert stainless steel tube

Insert the stainless steel tube over the bending segment according to the bending machine type.

4. Close the jaw

Lock the stainless steel pipe with the lockable clamping jaw in accordance with the operating instructions of the machine manufacturer.

5. Adjust the bending angle

With many bending machines, you can set the bending angle to 90 degrees on an engraved scale. For larger angles, choose 90 degrees for the first bend.

6. Pull through the bending handle

Pull the bending machine handle vigorously and evenly in the bending direction. After bending, open the clamping jaw and remove the stainless steel tube.

7. Add pipe

For bends greater than 90 degrees, you must open the bender and reload the stainless steel tube.

Tips & Tricks

Due to their hardness, stainless steel tubes have only a slight spring-back effect. Exceed the desired angle by about one percent to obtain the desired angle. Stainless steel pipes filled with fine gravel sand tend to have zero tolerances and are additionally protected against bending errors.

Video Board: RIDGID - How To Bend Stainless Steel Pipe