Star Industrial Co., Ltd. [Jie Weinuo recommend spiral duct spiral duct] To achieve this effect spiral duct supply, at least the product to do the following basic requirements first: to master the flow resistance in the ventilation ducts (friction and local resistance) calculation method and pressure distribution; Second: the method of determining proficiency than friction, local resistance coefficient typical of the local member; Third: to master the principles and methods for uniform air duct design calculations; fourth: Mastering duct layout and selection; fifth: Learn pneumatic conveying systems and gas pipeline computing a solid flow resistance characteristics; [Jie Weinuo Industrial Star recommendation spiral duct] Jie Weinuo Industrial production of spiral duct, spiral duct widely used in hotels, exhaust pipes. Spiral Duct Manufacturers spiral duct preferred Jie Weinuo Industries (Figure), spiral duct supply, Guizhou spiral duct provided by 捷维诺 (Tianjin) Co., Ltd. Jie Weinuo (Tianjin) Co., Ltd. (www.jieweinuo.com) adhere to the "people-oriented" business philosophy, has a professional staff, and strive to provide the best products and services to contribute to the community, and to welcome new and old customers to visit patrons, sincere cooperation for a better future. Jie Weinuo Industries - your trusted friend, Company Address: Wuqing District, Tianjin under zhuzhuang Street generalized way and Deyi road junction, Contact: Su Wei.