[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - a total of ventilation ducts], also known as duct flange plate flangeless duct, its production in the form of processing speed faster and more convenient than traditional rectangular duct, less air leakage rate. The advantage is saving material, reduce engineering investment; a small amount of air leakage, exhaust pipes to reduce energy consumption, save operating costs, popular construction enterprises welcome. United States and Europe and other developed countries since the 1990s using duct flangeless connection. [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 pipes, ducts can be divided into round duct, rectangular duct, oval duct, and other kinds, including circular duct of least resistance, the height of the largest pipeline construction, production complex. Therefore, the main application of a rectangular duct. Material pipe prices, duct can be divided into metal duct, composite duct, polymer duct. _ Tianjin Jinzhong Ji pipeline construction pipeline project (certified) _ Tianjin Tianjin Jinzhong Ji pipeline provided by HVAC purification equipment. Tianjin Jinzhong Ji HVAC purification equipment Limited (www.Jzjnt.com) is a leader in Tianjin, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the group leadership with the staff warmly welcome all inquiries negotiations to create a better future for the base.