[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product -] duct ventilation ducts are used in industrial and construction projects, mainly related application areas: electronics industry clean purification plant piping system price, medicine, food and sterile workshop purification system piping pictures, hotels, shopping malls, hospitals, factories and offices of central air conditioning systems, industrial pollution control dust, smoke, oil and other exhaust pipes, industrial environment or job comfort with air hose, use mine gas drainage gas drainage systems, environmental control of coal mine return air system ... and so on; PS: often film, animation developed escape and sneak into a special route. [Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product -] new air duct inlet pipe and imported fresh air units without additional software required phase connection? Such as total plate without flanged pipe, sometimes import size 750X420. Can not find a standard duct connecting with how to do? A: Of course, need to add soft connection. Clear once again, the connection can not be adjustable soft pipes, it is the role of vibration! Also, why must use the "standard duct"? 751.2X423.66 duct design, master workers can process the same! With a metal duct is knocked out, not with mold "cast out"! Total plate flange pipe, pipe Beijing, Tianjin Jinzhong Ji pipeline engineering company by Tianjin Jinzhong Ji HVAC purification equipment. Tianjin Jinzhong Ji HVAC purification equipment Limited (www.Jzjnt.com) strong, credible, in Tianjin fans, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the group into the brilliant and you work for a better future!