Angle iron flange duct processing _ Jie Weinuo brands (certified) _ Zhangjiakou angle iron flange duct provided by 捷维诺 (Tianjin) Co., Ltd. Jie Weinuo (Tianjin) Co., Ltd. (www.jieweinuo.com) is specialized in the "co-flange duct dampers, fans, ventilation pipes, evaporative air conditioners, cable tray," the business, the company adhering to the "integrity business, hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Su Wei. [Jie Weinuo Industrial Co., Ltd. Star recommendation angle iron flange duct] angle flange duct is the main raw material of galvanized steel angle iron flange for duct, through seams, machining, molding angle iron flange duct processing , angle flange duct has a convenient on-site production, while the design of the angle iron flange having duct installation, is the traditional ventilation, air-conditioning duct, handmade by previous changes to the current all mechanized production, total plate flange Duct with high efficiency, precision machining dimensions and other advantages. Angle flange [Jie Weinuo Industrial Co., Ltd. Star recommendation Jiaotie] duct flange angle refers to the angle iron or angle iron were angled flange duct volume automated through a special device, angle remains after processing two sides vertical angle of 90 °, no cuffs. And no wrinkles. Angle flange is divided into two: one is the outer roll angle (angle n roll, opening outwards), one is the inward roll angle (angle anti-roll, opening inwards). .