Star Industrial Co., Ltd. [Jie Weinuo recommend duct] fixed angle iron flange steel sheet ordinary loss was 13.8%, but generally not so high angle iron flange duct loss Dagang project, a total of flange plate duct fixing loss is generally about 10%, add up to about 25%. The whole project is based on the size ratio of flange plate duct to the estimates, generally no more than 25%. Whether new fan or air conditioning, and smoke machines and other Chittagong angle iron flange duct installation, the exhaust system is often used duct flange plate Chittagong angle iron flange duct manufacturers, due to the common duct has a flange low investment costs; low power consumption; low transportation costs, a small amount of air leakage Chittagong angle iron flange duct, so the best choice is now the new air conditioning systems and ventilation systems and smoke exhaust system of the machine. Calculate the loss rate is as follows: the long side surface A, the short side is B, a length L of rectangular duct area = (A + B) * 2 * L * and the loss factor flange loss coefficient is generally 1.1 to 1.2 Number disposed round duct cross-sectional diameter is D, a length L round duct area = 3.14 * D * L * and the loss factor flange loss coefficient is generally 1.1 to 1.2 [Jie Weinuo Music Number Recommended - Jiaotie Method Lan duct] Jie Weinuo company landed in Wuqing District, the registered capital reached 50 million yuan, the strength, advanced production equipment franchise angle iron flange duct, a total of flange plate duct, spiral duct, etc. . Chittagong angle iron flange angle iron flange duct installation _ Duct 捷维诺 Industrial manufacturers (certified) provided by 捷维诺 (Tianjin) Co., Ltd. Jie Weinuo (Tianjin) Co., Ltd. (www.jieweinuo.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. Industry leaders in Jie Weinuo staff warmly welcome all inquiries negotiations to create a better future Jie Weinuo Industries.