Our spiral duct is available in round and oval form which complies to AS4254-1995.

Round duct diameter ranges from 76mm to 1524mm with wall thickness between 0.6mm to 1.6mm.

Please refer to the Round Data Table below for available sizes.

Spiral Duct Round Data Table – diameters and gauges 507KB
  • Galvanised steel (1.6mm gauge available on request)
  • Mild Steel
  • Aluminium
  • Aluminized Steel
  • Stainless Steel T304
  • Stainless Steel T316
  • Air conditioning available as plain, thermally insulated and acoustically insulated
  • Mechanical ventilation
  • Tunnel ventilation
  • Dust and Fume extractions
  • Flues and Stacks
  • Concrete Formwork including voids and pier lines
  • Security cowling
  • Rubbish chutes
  • Radiant heat tubes