What is a spiral duct? Under  normal circumstances because it has been able to let the air between  the two places, so it is the most fundamental purpose is to play a role  in ventilation.

Because the appearance of the spiral  duct is extremely smooth, and no burrs, is silver-white, so when the  installation for the spiral duct, it can be more convenient, the  connection point can be less; the same spiral duct ventilation  resistance is too small , And the ventilation and noise is  also very small, natural installation, its strength and rigidity is just  good; and the biggest advantage of the spiral duct is that it is the  installation of low cost, but it is because of this, can guarantee the  pipe The leakage between the phenomenon to a minimum, in  the installation only need a small space, will be able to build its  advantages out. Under normal circumstances it is used in  all aspects, and its use of a wide range, can be suitable for a variety  of harsh wet places.