Huanghua spiral duct spiral duct of choice _ _ Jie Weinuo Industrial spiral duct reducers supplied by 捷维诺 (Tianjin) Co., Ltd. Huanghua spiral duct spiral duct of choice _ _ Jie Weinuo Industrial spiral duct reducer is Jiewei Nuo (Tianjin) Co., Ltd. (www.jieweinuo.com) launched this new upgrade, the above picture is for reference only, please You dial telephone or pictures on this page, for the latest information, contact: Su Wei. Star Industrial Co., Ltd. [Jie Weinuo recommend spiral duct] at no additional pressure drop in the case of production of spiral duct, the same installation space 200mm diameter circular pipe can be replaced by a 250 × 150mm rectangular pipes. Under no additional installation space premise spiral duct company, the number of parallel circular pipe to replace a flat rectangular pipe. Taking into account all the factors, in most cases, circular duct should be less than the space occupied by a rectangular duct. Star Industrial Co., Ltd. [Jie Weinuo recommend spiral duct] Jie Weinuo Industrial Co., Ltd. is located in Tianjin Beichen District, Tianjin Wuqing [junction of Highway and Wuqing] C under Zhu Zhuang Fumin Economic Zone area. The company is set steel trade sales, shear processing and distribution, technology development mechanism duct and cable tray production.