Total plate duct flange without flange, also known as duct Dazu County flange plate duct production, its production in the form of more efficient than the traditional rectangular duct processing speed, more convenient and less air leakage rate. Its advantage is to save material, reduce the project investment; small amount of air leakage, reducing energy consumption and save operating costs Dazu County flange plate duct making, popular construction enterprises welcome. First pressing Corner semi-finished products in Dazu County, flange plate duct making, this stage as long as the cut and perforated, stamped out of the Corner from 2000mm * 100mm sheet, plate making in the overall separation and punched out in the middle of the oval shaped hole. Flange plate duct production line _ Yao Fengzhen (Online) _ Dazu County flange plate duct provided by Lu right Tuen induced fan Limited. Lu right Tuen induced fan Limited (www.dzydfjjg.com) is an industry leader in Shandong Dezhou, 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. In Yao Fengzhen leadership with the staff warmly welcome all inquiries negotiations to create a better future Yao Fengzhen.