■ Automatic loading and unloading of U beam, automatic location, and automatic operation without manual work. Especially suitable for automatic batch production for holes on web and flanges of U beam.
■ The whole line has five punching units for the holes on web and both flanges of U beam, three units are vertical for the web holes, while the other two are assembled on the left and right sides of the machine line for the flanges holes.
■ One big and two small punching units for web of U beam.
■ The big one is for big holes, while the two small ones which can move along X and Y axis are for small holes. The productivity is greatly improved.