Sertom has designed a full range of machines, composed of three utensils, for the production of various flanged bottoms - a press with fixed frame and cylinder, a hydraulic manipulator and a flanging machine. Starting from a flat round plate, the first two work machines work synchronously to form the bottom, with varying radius according to need. Flanging commences once the contouring phase is over, which means that a special machine forms the bottom coupling flange with the tank.