[捷维诺 to recommend the star product - a total price of duct flange attachment unique advantages] thin steel rectangular duct flanges, and its size should be accurate TDF Flange duct production, beginning TDF should rule altogether duct flange, the interface should be closely; thin steel flange hem (or flange section) should be straight, bending should not exceed 5/1000; resilient spring clip cuttings or sheet steel flange should phase match; corner pieces and duct sheet steel flange should be firmly fixed to the four corners of the interface, close TDF Flange duct Which is stronger, end should be smooth, there should not be connected at the gap is greater than 2 mm penetration continuous seam; [Jie Weinuo to recommend the star product - black and white iron duct] total price of the unique advantages duct flange, material galvanized sheet, square, rectangle. Quick installation provincial labor for; all kinds of ventilation ducts Bazhou TDF Flange Duct | Total plate flange duct preferred by 捷维诺 Jie Weinuo Industries (Tianjin) Co., Ltd. Jie Weinuo (Tianjin) Co., Ltd. (www.jieweinuo.com) strong, credible, in Tianjin fans, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jie Weinuo Industrial and you hand into the brilliant, for a better future!