Wind pipe production line can be divided according to their functions: economic production Ⅰ line, TDF (Since its flange machine) Production Line Ⅱ, TDF / TDC (Plug-in flange machine) with a fold line production Ⅲ C / S flange machine production Ⅳ Ⅴ automatic production lines and duct lines. Wind pipe production line can process plate thickness 0.4-1.2mm, the width can be produced according to customer requirements and matching, the rack can be equipped on the volume of different thickness materials, especially for the production of ventilation ducts. Fengyuan Machinery under domestic and international market forces demand, developed a special air duct software, its operating system is stable in the DOS environment. The software has a pull-down menu, you can achieve human-computer dialogue, users can just press some function key operation. Duct special software is easy to learn, especially for the wind pipe production. Installation of the system won the China Association "and technological progress award." Maximum operating speed of production lines to 10 m / min Accuracy: length error ± 0.5mm, ± 0.8mm diagonal error