Spiro International SA is the undisputed world leader in the development and manufacture of machines to produce environmentally friendly air duct systems required in the heating, ventilation, air conditioning HVAC and sheet metal industry. Our identity as a Swiss quality brand stands for reliability, security, and trust.
PRODUCTS
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A Tubeformer is a spiral duct machine that produces straight round spiral ducts and is mostly applied in the HVAC industry, but also in mining, jacketing, and voidforming sectors. Spiro® is the inventor of original spiral duct machines with over 60 years of experience.
Our Stitchwelders make the stitch welding process smooth, continuous, and airtight. This resistance welding application is mostly used in the HVAC and sheet metal industry to produce fabricated bends and fittings.
Spiro® offers various machines that are essential in the production of round bends and fittings. Our high quality machines are used for flanging and folding the welded segments.
From Round to Flat Oval – The Ovalizer and Roval Roller ™ transform the ducts and fittings to flat oval shapes.
The Spiro® Rectangular Machines portfolio boosts your HVAC workshop productivity and efficiency.
Added Services
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INDUSTRY 4.0
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News
The new TW 1000 line runs spiral duct up to 1000 mm at 60 m/min.
First units are already in production at three European plants.
Product
A redesigned forming head with quick-change rollers.
Setup time between diameters drops from 45 to 8 minutes.
Event
Hall 7, stand C21. Live demos of the flanging and beading cells every hour, plus a first look at the new control panel.
Service
Every machine shipped in 2026 comes with a secure gateway.
Our technicians read fault codes before the service van leaves.
Innovation
Inline seam measurement corrects roller pressure automatically and keeps the lockseam within 0.1 mm over a full shift.
Reference
Two forming lines, one elbow cell and a full material handling retrofit, commissioned in eleven days without stopping production.
Training
Four-day courses in Uznach covering setup, maintenance and troubleshooting. Sessions in German, English and French.
Sustainability
The new cutting optimiser plans coil usage across the whole order book instead of job by job.
Spare parts
Over 4000 wear parts on stock in Switzerland.
Orders placed before 15:00 CET ship the same day.
Career
Mechanical and controls engineers wanted for our Uznach headquarters. Swiss precision, worldwide installations.
Logistics
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New
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