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Spiral Duct and Fittings

Samco Flex Ducts® a leading manufacturer of Flexible Ducts in Asia - Pacific has now introduced a complete line of standard, commercial and industrial Spiral Ducts and Fittings designed to meet all standard and customized specifications.

Round Spiral Ducts manufactured by Samco Flex Ducts® are specifically designed and manufactured as per SMACNA, IS - 655, 1963 & 2006 and ASHRAE 90.1 guidelines and recommendations.

Round Spiral Ducts and Fittings


​• Diameter: 75 mm to 1600 mm
• Length: can be customized as per project
• Material: GI, Mild Steel, Aluminium and SS 


• Lower Heating and Cooling Energy Use.

• Lower Fan Energy Use.
• No Air Leakage.
• Neglegible / No Pressure Drop.

• Optimal Airflow.
• Lower Noise Levels than traditional Rectangular Ducts.

• Lower Material Consumption hence lighter in weight.

• Easier to clean than traditional Rectangular Ducts.
• Easy Installation.
• Lower upfront and operating costs.


• Air Conditioning (High Pressure & High Velocity Distribution System).
• Used for Heating, Ventilation and Air - Conditioning in industries as well as in commercial spaces.

• Used for Dust Removal and Fume Exhaust.
• Used in Grain Handling and Material Conveyance.
• Humidification.

Decorative Duct
Decorative Spiral Duct
Double Wall Pre Insulated Spiral Duct

Double Wall Pre-Insulated Spiral Duct

Samco Flex Ducts® manufactures best in class Double Wall Pre -Insulated Spiral Duct which comprises of two concentric spiral ducts of different diameters with the intervening space filled with Fiberglass Insulation. It is virtually airtight.


• Offers exceptional thermal and noise control

• Double-wall fire protection.
• Lower friction loss.
• No fibers in the airstream.

• Protection from External damages.

• Easy Installation.


• Air Conditioning (High Pressure & High Velocity Distribution System).

• Humidification.
• Clean Rooms and Pharmaceuitcal Industries.

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