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Spiral Tube & Ducting Fittings

Galvanised spiral tube, spiral ducting and ductwork fittings available in a large range of sizes.

Our ductwork complies to DW144 standard, the UK recognised specification for how to manufacture and install ductwork. Spiral ducting tube is made for transporting air - supplying fresh air into buildings and extracting excess or stale air out of buildings. Spiral duct is much more effective in terms of reduced air leakage than rectangular ducting due to fewer joints because of its large 3m lengths.

We supply a large range of spiral ductwork products including 45° bends, 90° bends, 60° bends, Y pieces, T pieces, reducers, saddles, shoes & boots, volume control dampers, blast gate dampers, round access doors and flat access doors.

Spiral ducting can be used to carry air up to temperatures of around 200◦c continuously and around 250◦c intermittently. If used above recommended temperatures, discolouring and corrosion can occur. Our spiral ductwork systems are suitable for commercial, industrial and HVAC ventilation installations where strong airflow performance and reduced leakage are important. Read more

Our galvanised spiral tube is available in a wide range of diameters to suit commercial, industrial and HVAC ventilation systems. We supply spiral tube, bends, reducers, access doors and ductwork fittings from stock, helping contractors and facilities managers source complete ventilation systems from one trusted UK supplier.

We can offer advice over the phone or email. Other products not listed are also available so please enquire via email orders@alphatube.co.uk.

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45° Spiral Ducting Y-Piece

Y piece 45-degree made from galvanised steel. Male ends to fit in spiral ducting, flexible tube etc. Available in sizes ranging from 63mm – 710mm. Bigger sizes available by phone or email enquiries.

*Please note* some of the more uncommon sizes may have a larger lead time.

Data Sheets

£0.00 ex VAT

60° Spiral Ducting Bends

60-degree bend made from galvanised steel. Male ends to fit in spiral ducting, flexible tube etc. Available in sizes ranging from 63mm – 710mm. Bigger sizes available by phone or email enquiries.

*Please note* some of the more uncommon sizes may have a larger lead time.

Data Sheets

£0.00 ex VAT

Round Access Doors

  • Curved access doors to suit circular ductwork. Used to access the insides of the ducting to reset fire dampers or to clean.
  • A sandwich type effect that clamps the opening with a gasket seal by wheel knobs.
  • Self adhesive template included.
  • Size: 250x150 - for all door's
  • Size: 400x300 - for 560 dia Big

£0.00 ex VAT

Flat Access Doors

Square and rectangular insulated, tabbed and sealed access doors for flat surfaced ducting. Used for resetting fire dampers and cleaning ductwork. Other sizes available please enquire.

£0.00 ex VAT