Star Industrial Co., Ltd. [Jie Weinuo recommend duct] angle angle iron flange angle iron angle iron, commonly known as the wind pipe production, are perpendicular to each other on both sides of a triangle strip steel. Angle has equilateral angles and unequal angle of the points. Equilateral angle of the two sides equal width. Its specifications indicated by the side edge width × width × millimeters thick edges. Such as "∠30 × 30 × 3" angle iron duct quote, it means that the edge width of 30 mm [Jie Weinuo Star recommendation - angle iron flange duct] Jie Weinuo Industrial provide duct finished, semi-finished products, duct material foot, fire ventilation engineering fabrication and installation. Jiaotie duct processing, Tianjin Jie Weinuo Case Country Garden Industrial ventilation duct west angle iron provided by 捷维诺 Industries Limited (Tianjin). Jie Weinuo (Tianjin) Co., Ltd. (www.tjjwnsy.com) is a leader in Tianjin, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Industry leaders in Jie Weinuo staff warmly welcome all inquiries negotiations to create a better future Jie Weinuo Industries.