And popular flange plate duct using duct fighting strength scale processing section cut galvanized steel material loss. This duct should be sealed at a high pressure air to 4050mm inner tube in the duct section associated with the folding of the tube should be in the longitudinal seams of the duct and duct sealing compound section. When designing the ventilation system duct galvanized material, should try to reduce the pressure loss of the system. When the total amount of losses and pressure ventilation system is large, it can be divided into small systems. Flow velocity in the pipe should not be too high, so as not to cause noise regeneration. Determining co-plate inner flange ventilation duct air velocity should be selected according to the different requirements of the relevant provisions. Here to tell us about methods to reduce noise. Galvanized duct quotes, Zhucheng galvanized duct, Yaofeng Zhen Lu right Tuen induced by the fan Limited. Galvanized duct quotes, Zhucheng galvanized duct, 姚风振 Lu right Tuen induced fan Limited (www.dzydfjjg.com) this year introduced a new upgrade, the above picture is for reference only, please call the contact or pictures on this page phone, for the latest information, contact: Yao Fengzhen.