Spiral Seam Round Duct Systems (Spiro Ducts)
Spiral Seam Round Duct Systems (Spiro Ducts) are engineered for high-efficiency air distribution across modern HVAC networks, industrial installations, and contemporary exposed-ceiling architectural designs. Manufactured with continuous spiral-lockseam technology, the circular geometry minimizes airflow friction, ensuring smooth, turbulence-free ventilation.
Equipped with factory-fitted EPDM rubber gasketed fittings, the system achieves certified Class D airtightness according to EN 12237 standards, virtually eliminating air leakage. High static pressure resistance, low weight, refined aesthetics, and rapid push-fit assembly make it the preferred ducting solution for energy-conscious engineering projects.
Key Features
- Class D Airtightness: Factory-mounted double-lip EPDM gaskets deliver maximum sealing performance and reduce fan energy loss
- Spiral Lockseam Strength: Continuous external mechanical interlock provides superior rigidity under positive and negative pressures
- Low Pressure Drop & Acoustics: Aerodynamic circular profile minimizes dynamic drag, turbulence noise, and operating costs
- Versatile Diameter Range: Available from Ø 80 mm up to Ø 1600 mm in galvanized steel, stainless steel (AISI 304/316), or aluminum
- Architectural Aesthetics: Sleek circular appearance ideal for open ceilings, with optional RAL powder-coating finishes
- Fast Push-Fit Assembly: Tool-friendly connection system requiring no additional mastic, tapes, or complex sealing on site
Application Fields
- Modern corporate offices, open-plan workspaces, cafes, and exposed-ceiling retail outlets
- Shopping malls, supermarkets, sports arenas, and exhibition pavilions
- Hospitals, cleanrooms, analytical laboratories, and hygienic ventilation networks
- Industrial production plants, textile mills, and pneumatic dust/sawdust extraction lines
- Car park smoke clearance networks and high-pressure shelter ventilation runs
