Consists of a total of flange angle code, flange clamps Qujing Fire flange plate duct, and the duct flange integrally connected, although the cost of this form of air duct is low (angle reduces the amount of reduced production angle flange artificial use), but the practical application of it is better angle flange firmly Qujing fire a total of flange duct air leakage is large Qujing Fire flange plate duct, and must be processed through the machine almost handmade We can not achieve its production, generally apply only to new air system, air conditioning system, exhaust system or frequently used angle flanged duct. But the air defense projects are absolutely not allowed to use a total of flange connection. Flange plate duct engineering throughout the construction process 80% of the workload at the factory by the complete processing machinery and equipment by the process [package scraped material, shape, commissure and spell Angle, sealed, cleaning, duct hangers hanging bars production). Construction site, leaving only the duct connected to the hoisting, site construction tool is simple, easy to install. Compared with conventional pipe flanges wind angle, a total of flange plate duct easy to install, saving time and labor and material. Square flange plate duct, Qujing total of flange plate duct 姚风振 by Lu right Tuen induced fan Limited. Lu right Tuen induced fan Limited (www.dzydfjjg.com) strong, credible, Shandong Texas fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead into the brilliant Yao Fengzhen and you work for a better future!