Duct production line is made by the feeding frame, leveling pressure tendons, punching mouth and red square mouth, hydraulic cutting plate machine, displacement joint angle seaming machine, robot grasping material positioning feeding platform, double linkage plate flange machine , Double linkage single bone angle iron flange machine (or double linkage buckle reel machine), servo feeding platform, TDF hydraulic folding machine, electrical control part of the whole computer control, bending servo feeding, positioning accuracy, especially processing "mouth "The type of pipeline, to ensure that the bending accuracy, the maximum feed speed of 16m / min, the length of the error of 卤 0.5mm, the line can be processed TDF plate flange, angle iron flange or plug flange, easy exchange ,fast. The machine is linear processing, high production efficiency, can create a small cross-section of the "mouth" word duct, the smallest cross-section processing for the "200x200 full flange flange.