[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - Duct Duct] is used for air transport and distribution pipeline system. There are two types of composite pipe and inorganic air duct. Duct cross-sectional shape and material can be classified. Duct production of stainless steel duct production is sewn seams, rivets and joints, flange flange gap at the four corners, etc. Apply sealant (eg neutral glass, plastic). Should remove surface dirt and grease before applying sealant. Press the cross-sectional shape, can be divided into circular duct duct, rectangular duct galvanized pipes, ducts and other oblate, including round duct height dimension of least resistance maximum exhaust pipes, making complex. Therefore, the main application of a rectangular duct. Material, duct can be divided into metal duct, composite duct, polymer duct. [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 the need, sometimes import size 750X420. Can not find a standard duct connecting with how to do? A: Of course, need to add soft connection. Once again clear the pipeline, soft joints not adjustable, 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"! Galvanized steel pipes, pipe Tianjin, Tianjin Jinzhong Ji pipe manufacturers (View) provided by the Tianjin Jinzhong Ji HVAC purification equipment. "Fan, outlet, air valve, air duct, air-conditioned terminal, purification products" preferred Tianjin Jinzhong Ji HVAC purification equipment Limited (www.Jzjnt.com), the company is located: Xiqing District, North Industrial Park, North Park outside Central Industrial 19 years, the base to provide customers with the best quality service, Contact: Yang. Welcome to the new and old customers call, letter, visit the guide, business negotiations. The group expect to be your long-term partner!