Deep-drawing is a manufacturing process in which a cut to size even plate is placed and centred into a tooling. The blank is pressed on a hold-down device by a pulling die which also holds it at the outer edge.  The hold-down device impinged with pressure is suppressed by a die which is impinged with higher power and pulls the plate over the bevelled edge into the pulling die, thus a hollow part arises. The bottom of the vessel keeps its original thickness of plate while the edge of the work piece is stretched and, therefore gets slightly thinner. In case that the required depth of the bowl cannot be realized by a single deep-drawing process, it is possible to divide the entire process into several operations.