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 200◦c at a continual temperature and around 250◦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
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BUY OVER 5 PRODUCTS - 10% OFF
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30° Bends
Our 30-degree bends are manufactured from durable galvanised steel and designed with male ends to easily fit into spiral ducting, flexible ducting, and other standard ventilation systems. Ideal for changing airflow direction while maintaining system efficiency and integrity.
Product Details:
Material: Galvanised steel
Angle: 30° bend
Connection: Male ends for direct insertion into spiral or flexible ducting
Sizes Available: 63mm – 710mm as standard
Larger Sizes: Available on request — contact us by phone or email
Please Note: Some uncommon sizes may carry a longer lead time due to manufacturing schedules.
These fittings are a reliable choice for HVAC systems, extraction setups, and general-purpose ductwork in commercial and industrial environments.
DISCOUNT OFFER
BUY OVER 5 PRODUCTS - 10% OFF
BUY OVER 10 PRODUCTS - 20% OFF
45° Bends
45-degree bends to suit spiral tubing, made from galvanized steel. Male ends to fit in spiral ducting or flexible tube. 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.
DISCOUNT OFFER
BUY OVER 5 PRODUCTS - 10% OFF
BUY OVER 10 PRODUCTS - 20% OFF
45° Y-Piece
Y piece 45-degree made from galvanized 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.
60° Bends
60-degree bend made from galvanized 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.
DISCOUNT OFFER
BUY OVER 5 PRODUCTS - 10% OFF
BUY OVER 10 PRODUCTS - 20% OFF
90° Bends
90-degree bend to suit spiral tubing, made from galvanized steel. Male ends to fit in spiral ducting or flexible tube. 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.
DISCOUNT OFFER
BUY OVER 5 PRODUCTS - 10% OFF
BUY OVER 10 PRODUCTS - 20% OFF
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.
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.
DISCOUNT OFFER
BUY OVER 5 PRODUCTS - 10% OFF
BUY OVER 10 PRODUCTS - 20% OFF
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.
DISCOUNT OFFER
BUY OVER 5 PRODUCTS - 10% OFF
BUY OVER 10 PRODUCTS - 20% OFF
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.
DISCOUNT OFFER
BUY OVER 5 PRODUCTS - 10% OFF
BUY OVER 10 PRODUCTS - 20% OFF