Star Industrial Co., Ltd. [Jie Weinuo recommended angle iron flange duct] angle specifications indicated by side and edge thickness dimensions. At present, the domestic angle specifications for 2-20 galvanized duct processing, the number of sides in centimeters long as the number of number of galvanized duct manufacturers, the same number of different angles often 2-7 edge thickness. Imported angles indicate the actual size and edge thickness on both sides and indicate the relevant standards. General side length 12.5cm above for large angle galvanized duct production, 12.5cm-5cm between the medium angle, side length 5cm below for small angles. [Jie Weinuo Star recommendation - angle iron flange duct] angle iron flange duct flanges sub 3 # 4 # 5 # angle iron, rectangular, square, round, can be processed. Galvanized duct ventilation installation, wangqingtuo galvanized duct, Jie Weinuo Industrial ventilation engineering fabrication and installation provided by 捷维诺 (Tianjin) Co., Ltd. Jie Weinuo (Tianjin) Co., Ltd. (www.tjjwnsy.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!