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Spiral Tube & Fittings
Spiral galvanised ductwork & fittings in a large range of sizes.
Our ductwork complies to DW144 standard. The UK recognised specification of how to manufacture and install ductwork. Spiral ducting is made for transporting air - it supplies fresh air into buildings and extracts excess/stale air out of buildings. Spiral duct is much more effective in terms of less air leaks then rectangular ducting due to less joints because of its large 3m lengths. Spiral ducting can be used to carry air up to temperatures of around 200â—¦c at a continual temperature and around 250â—¦c if the temperature is intermittent. If used above recommended temperatures, discolouring can happen and corrosion can occur.
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
Female Collar
Female collar made from galvanised steel. These collars are made to join male fittings together such as bends or tees. Available in sizes ranging from 63mm – 630mm. Bigger sizes available by phone or email enquiries.
*Please note* some of the more uncommon sizes may have a larger lead time.
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End Caps
Cap ends made from galvanised steel with male ends to fit inside spiral ducting. Cap ends are used to terminate ducting runs. Available in sizes ranging from 63mm – 630mm. Bigger sizes available by phone or email enquiries.
*Please note* some of the more uncommon sizes may have a larger lead time.
*Please note* depending on size, some cap ends can act as a female connection.
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Curved Shoes & Boots
Galvanized steel shoe to fit on ducting of a larger diameter at a 90 degree angle. Male ends to fit inside ducting. Available in sizes ranging from 80mm – 710mm. Bigger sizes available by phone or email enquiries.
*Please note* some of the more uncommon sizes may have a larger lead time.
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Cowl
Weather cowls made from galvanised steel that fit over spiral ducting. Weather cowls are made for terminating ducting, whilst stopping rain and vermin from getting inside the ducting run. Available in sizes ranging from 80mm – 630mm. Bigger sizes available by phone or email enquiries.
*Please note* some of the more uncommon sizes may have a larger lead time.
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Blast Gate Damper
Manufactured from cast aluminium with a galvanised shut off blade. These circular dampers are ideal for use on extract systems in the woodwork industry where by you can shut off parts of a system that are not in need of a constant flow.
*Please note* other sizes may be available by telephone or email enquiries.
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90° Bends
90° bend designed for use with spiral tubing, manufactured from robust galvanised steel. Supplied with male ends for straightforward connection to spiral ducting or flexible tubing. Standard sizes range from 63 mm to 710 mm, with larger dimensions available on request via telephone or email.
Please note: Certain less common sizes may carry a longer lead time.
Data Sheets
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