Star Industrial Co., Ltd. [Jie Weinuo recommend duct] fixed angle iron flange steel sheet ordinary loss was 13.8%, but generally not so high loss total of flange plate duct fixed loss is generally about 10% Jiaotie flanged duct manufacturers, add up to about 25%. The whole project is based on the size ratio of flange plate duct to the estimates of angle iron flange duct, usually no more than 25%. Whether new fan or air conditioning, and smoke machines and other production angle iron flange duct, exhaust system is often used a total of flange duct, due to the common duct flanges with low investment costs; low energy consumption; transport low cost, small amount of air leakage, it became now the best choice for the new air conditioning and ventilation systems as well as systems and smoke exhaust system of the machine. Its loss rate is calculated as follows: face the long side of A, B supply short side angle iron flange duct length L rectangular duct area = (A + B) * 2 * L * flange and loss factor loss coefficient is generally 1.1 to 1.2 provided the number of round duct cross section diameter D, length L round duct area = 3.14 * D * L * and the loss factor flange loss coefficient is generally 1.1 to 1.2 [McNair dimension number Connaught Industrial Co., Ltd. Star recommendation angle iron flange duct] angle may require different structures composed of a variety of different force components, but also for connections between components. It is widely used in a variety of building structures and engineering structures such as beams, bridges, transmission towers, material handling equipment, marine, industrial furnace, reaction tower, container racks and storage shelves. Angle iron flange duct Price | Tianjin angle iron flange duct | galvanized duct board preferred by 捷维诺 Jie Weinuo Industrial (Tianjin) Co., Ltd. Jie Weinuo (Tianjin) Co., Ltd. (www.jieweinuo.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 Jie Weinuo Industrial and you hand into the brilliant, for a better future!