Forming quality products that provide the highest benefit to the customer from the best materials requires sophisticated processes and professional experts: voestalpine Krems has the expertise in processing and materials required for pioneering customised tubes and sections solutions – this makes us the preferred development and manufacturing partner beyond the roll-forming process.

The welding process is applied to a round tube and is only calibrated in line with a rectangular or square tube of the same size in the calibration line.

• Larger and more round-edged external rounded area
• Weld seam position also possible off centre
• Increased strength through the forming process

The strip used as raw material runs through roll-forming tools arranged in succession and is formed directly in stages to the desired cross-section.

• Narrower tolerance ranges with the weld seam centre
• Smaller (sharper) expression to the external rounded area
• Lower tensions within the tube
• When punching
• When bending
• When laser machining