Automatic Bellow Forming Machine. 1.Range: DN100-1200mm, DN100-1600mm. 2.Patent:Auto rotating salver and auto cone retraction system. 3.Siemens control system and HMI input screen. 4.It contains 3 working positions and can form 3 bellows at the same time. 5. It's powerful enough to form various thick SS and Inconel alloy. 6. It can form different height and pitch automatically.