ADL-Ⅱ automatic air pipe production line is a particularly suitable for the production of flange air duct equipment. The device uses the international popular profiles welded structure, the material on the synthesis and integration of aircraft leveling grooving, red tip of the mouth side port, hydraulic shearing and computer control system. Loading within the support frame synchronous form, fit diameter Φ480-610mm of coil. Closed loop feedback control system computer, to ensure the accuracy and stability. 
 ADL-Ⅱ automatic air pipe production line maximum feed speed of 15m/min, the length of error of ± 0.5mm, diagonal error of ± 0.8mm.