Versatile Method

The Roll-Kraft versatile design method works very well on light-gauge, mild steel, or some higher tensile steels.

The versatile design gives more consistent tube properties, unlike other designs that can have hard and soft spots.  This is a great benefit for hydroformed tubes.  It also provides greater stability by providing a rounder tube when going through the fin passes.  There is less buckling, and it helps remove the memory of the strip. The versatile design is the best choice for sharing breakdowns since it works more of the strip with each pass. When sharing, it is recommended that the tube produced to be no less than 80% smaller than the designed tube size.

There are many advantages to using the versatile method.  Some include:
•    Reduction of material springback and greater stability
•    Provides a better, rounder presentation of the strip as it enters the fin pass
•    Works well for hydroformed products
•    Forms more of the strip with the edgeform radius
•    Allows better formation of smaller sizes when sharing breakdowns

Two issues can arise when using this method, due to the aggressiveness of this forming design:
•    Marking - This design is best used with a T/D ratio (thickness divided by diameter) of under 3%; using heavier gauges can cause marking
•    It is important that side rolls be in place between each breakdown to assist with the forming flower

The versatile method is very useful in the industry and continues to be the choice of many companies that run multiple-size tube and pipe products.

  • versatile_edgeform.png
  • versatile_edgeform_2.png


On-Time Delivery


First Time Performance

Still Searching For Answers?

Roll over to our Worlds Leading Resource Center

Search our Resources

No One Else Does What We Do

Roll form tooling tested at our facility or yours

Illustration of three linked gears small medium and large. Learn More

Detailed setup package & technician's testing remarks

Illustration of a piece of paper with lines on it to indicate writing. Learn More

Tooling drawing fully detailed

Illustration of a pencil. Learn More

Technicians available to troubleshoot at your facility

Illustration of a technician bust wearing a hat with with a wrench below the technician. Learn More

Tooling shipped in foam-filled wooden crates

Illustration of a box with all 4 top flaps open. Learn More

If it's not right, we'll make it right. Guaranteed.

Time to Roll Profits!

Have a technical question?

Need a quote from one of our performance specialists?

Simply contact us here or call and get answers 24/7.

Contact Us (888) 953-9400

Roll-Kraft hosts regional Tube and Pipe Mill seminar in Waverly, Nebraska

After a long dry spell of over two years due to the pandemic, Roll-Kraft hosted its first regional seminar of the 2022 season in Waverly, Nebraska on May 3rd.

➤ Read More

Roll-Kraft Tube and Pipe Live Training Seminar on May 3

Join us on May 3rd, 2022 for our live Tube & Pipe training seminar.

➤ Read More

In Memory: Bret Molnar (1959-2021)

It is with very heavy hearts that we announce the passing of our beloved lifelong teammate, Bret Molnar.

➤ Read More