Star Industrial Co., Ltd. [Jie Weinuo recommend spiral duct pressure characteristics] for the same installation space often several circular pipe with a rectangular duct installation space is the same or less. Many rectangular ductwork systems need to install four bolts galvanized spiral duct, thus increasing 40 ~ 80mm in each direction of the pipe. ⑸ pressure drop: As we all know, the circular duct drag drag than rectangular duct is much smaller. (Jie Weinuo Industrial Star recommendation spiral duct) The company produces spiral duct, a total of flange plate duct, duct flange angle iron spiral duct production, wind pipe coating, automatic assembly line, full of raw materials, capital rich spiral Duct production, the company registered capital of 50 million yuan, security, undertake a variety of works produced exhaust ventilation installation business. Spiral duct production, Beichen spiral duct, spiral duct preferred by 捷维诺 Jie Weinuo Industries (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!