In the labor costs continue to rise, and the resulting decline in profits today, how to create the most value with the fewest workers became duct manufacturer common goal. To meet the different needs of customers, we have research and developed duct production line has two styles: one is linear type V, them composed of a decoiler, leveler grooving unit, “V” and “口” notching unit, cutting unit, bending unit，reciprocating lock former unit, feed extraman unit, duplex flange (angle iron & TDF), automatic folder unit composition；

      Another is U type V，also composed of a decoiler, leveler grooving unit, “V” and “口” notching unit, cutting unit, bending unit，reciprocating lock former unit, feed extraman unit, duplex flange (angle iron & TDF), automatic folder unit composition；In addition to the above standard configuration, the two duct production line can also according to customer demand with the support of punching of the reinforce holes unit, C & S flange connection required for notching unit and forming unit, U-shaped duct production line can be added more