Lanzhou, Yinchuan automatic duct production of five lines, automatic air duct produces five lines, linear structure to reduce the transfer time of sheet metal, high production efficiency, sheet metal are used to separate VVVF motor drive, 10-stick leveling beading agencies to ensure that a variety of thick plate sheet flatness, processing material saving mode, each the volume material only a scrap of less than 20mm, folded side servo feed precise positioning, especially in the mouth font duct processing, obvious advantages using the touch screen and keyboard dual mode, to ensure the stability of the operation, only one person to operate, two removed the pipes, with processing count for statistical and management, with the date the cumulative number of accumulated counts to support the printer features production management . With an option for production angle iron flange production duct the double linkage Equipment 7mm flange.