Channel ducting features: The duct or air duct is used in air conditioning to bring air in or out. The required air flow includes Supply Air, Return Air and Exhust Air. Thus, the channels are a way to ensure the acceptable indoor air quality (Indoor Air Quality) and It is also Thermal Comfort. A duct system is often called a duct work. Duct design includes mapping, sizing, optimization, execution and implementation of pressure drop in a duct system, which is performed by technical engineers in Axin Ventilation Technical and Engineering Company. Today, a new generation of round channel called Spiral channel has been released with outstanding features, which in addition to producing and stocking all sizes in the desired length and diameter, has a very high resistance. The technology of making spiral channels is based on sewing and spiral pressing of the edges of the metal strip, which is made of male and female during the rollform process. These channels can be produced from 10 to 160 cm in diameter with sheet thickness of 0.5 to 2 mm. Also, the types of connections of these channels include tripods, knees, converters, crossroads, fasteners, pants, dampers, hoods and so on. Auxin Ventilation Company also has the ability to supply this pipe along with thermal insulation.