Spiro Group – Leading Machine Solution Provider for Air Duct Systems

Our business principle is to support the improvement of indoor air quality by providing machines and solutions used to produce economical and environmentally-friendly air duct systems.

Spiro International S.A. is the undisputed World leader in the development and manufacture of machines for the production of air duct systems required in the HVAC and sheet metal industry.


As the inventor of the spiral duct machine - the so-called Tubeformer - we have built a sound reputation in the HVAC and sheet metal industry over the last six decades. With thousands of high-quality sheet metal machines delivered across the globe we have developed a strong relationship with our customers - worldwide. What once started as a Tubeformer manufacturing company has transformed into a fully-fledged organization that encompasses the entire range of round and rectangular ducting equipment, as well as customized solutions for the ventilation industry. Headquartered in Bösingen, Switzerland, Spiro® offers direct access to our competence centre where our machines can be seen in action or inspected prior to shipment, as well as gain insight to our R&D centre. Moreover, with our subsidiaries in North America and Russia plus a global network of sales partner we provide local expertise and underline Spiro®'s global holistic approach. Spiro® stands for state-of-the-art machinery and world class service and support built on long-standing collaboration with our customers. Why? Because:
Your Trust is Our Drive - since 1956.



History of Spiro International SA - It all started in 1952 in a moment of true inspiration

It all started in 1952, when Erling Jensen and Leif Andresen - in a moment of true inspiration - suddenly saw the possibility of round ventilation systems; easier production, easier installation, easier sealing and easier maintenance.

After the first euphoric moments, they found themselves back at square one - with a big problem. How do you design and produce a machine that turns sheet metal into round tubing effectively.

Four years later their invention - the SPIRO® TUBEFORMER - was a reality. So was the Spiro® company itself. The SPIRO® TUBEFORMER revolutionized the production of ventilation tubing, leaving the square competition back at square one.

Since 1956 Spiro® has developed and produced a number of important and patented sheet metal processing machines, each devoted to a specific phase in the production process of different ducts, fittings and tubes.

The Spiro® family of machines today comprises a number of key machines. You will find these presented on the following web pages. Although they can be put together into a complete production line, each machine can be used on a stand-alone basis, depending upon the specific user needs.

Whichever way you decide to configure the machinery, you will get all the precision, quality and support that comes with Spiro® equipment.

Spiro® - The Invention

The invention

Spiro® - Global Presence

Global Presence

Spiro® - Your Partner

History in the Maching