Spiro-Loc Rigid Steel Duct
Spiro-loc is a light weight sheet metal tubing, which is machine made in a spiral form from metal strip coil stock. Forming dies are held for common sizes between 100 mm and 1500 mm diameter. Special dies can be produced for larger or non standard sizes.
The four-ply lock seam adds sufficient strength for the circular shape to be rigidly maintained up to 600 diameter in 0.95 mm material, or 500 diameter in lighter gauge. Additional rigidity and crushing strength can be achieved by the incorporation of one or two external swages. Common applications include ducting for heating, ventilating and air conditioning, void forming in concrete, irrigation pipe and rubbish shutes on high rise buildings.
Selection of Wall Thickness and Girth Joints The following table presents data which is acceptable under Australian Standard AS 4254-2002 ‘Ductwork for air-handling systems in buildings’.
- CategoryVentilation Components
- RangeDucting
Series Spiro-Loc Lightweight plain galvanised steel construction, spirally wound ductwork, with a four-ply lock seam joint, suitable for HVAC applications, concrete void forming, irrigation pipe and rubbish shutes. Additional single or double swages can be incorporated to improve rigidity and crushable strength.
Complies with AS4254: 2002, AS1530.3 and UL181, where applicable.
All shall be Series Spiro-Loc as manufactured by Holyoake.
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Holyoake Air Management Solutions by Price has been at the forefront of Heating, Ventilation, and Air Conditioning (HVAC) for over 70 years. The brand Holyoake is synonymous with high quality, engineering performance, and innovation. Our products are critical components for both large commercial and residential buildings and facilities. With our broad product range, Holyoake is specified across all stages of the construction process.
Operating from manufacturing sites across both New Zealand and Australia helps expand our engineering capabilities to produce industry-leading products and facilitates strong customer relationships. Holyoake has built a strong reputation for delivering reliable and high-quality products backed by first-class customer service.
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