Circular ducts



Galvanized steel circular ducts of CC series  are available in different diameters and with different thicknesses of sheet metal. It’s possible to supply spiral ducts and different types of curves and connections.

Cestaro Bernardo S.r.l. is able to provide and install circular ducts and accessory components of any types, even on the customer's specifications or design, in addition it offers its support in the design and construction of the ventilation systems of various kinds (conditioning and suction systems, filtration, clean rooms etc.).



Ducts are provided with a leakage class A (bended ducts) or a leakage class C (spiral ducts) according to EN 12237 and they can be supplied with compliance to SMACNA specifications.


Structure and dimensions


Standard construction in galvanized steel. On request in stainless steel.


Surface finishing

On demand the ducts can be supplied painted or with particular surface treatments.


Accessories and components

It can be supplied connections, forming or sectors 90° curves and other specific components.



Using mechanical fastening, edged ends with clamp or by flanges according to EN 12220.











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