TDF flange plate steel fused with the pipe because, do not like the angle flange-like punch riveting, Tanggu galvanized duct, pipe in two sections connected by a dedicated Falanca, four corners plus 90 degrees angle rear flange bolted. Flange plate duct produced 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, galvanized duct price, popular construction enterprises welcome. The United States and Europe and other developed countries since the 1990s can not use duct flange connection, now this technology has been widely used in various projects. If the project budget, an ordinary sheet steel quotas loss was 13.8%, but generally not so high losses, a total of flange plate duct is fixed loss is generally about 10%, galvanized duct fittings, add up to 25% about. Depending on the size of this proportion of the whole project duct to the proposed budget, usually less than 25%, but we have done engineering in general actual loss is generally not more than 20% of galvanized duct, Shenglong air conditioning (online consultation), Tanggu plating Zinc duct ventilation and air conditioning provided by the Texas Shenglong plant. Texas Shenglong ventilation and air conditioning plant (www.fengguan666.com) (www.dzsltfkt.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. Shenglong air conditioning in leadership with the staff warmly welcome all inquiries negotiations to create a better future Shenglong air conditioning.