Stamping and drawing parts 
The stamping process is considered deep drawn stamping, or deep draw, when a part is pulled (drawn) into a die cavity and the depth of the recess equals or exceeds the minimum part width.
Deep drawing uses radial tension-tangential compression to shape the metal.
This process transforms flat sheet metal, or blank, into a hollow vessel that may be cylindrical or box-shaped, with straight or tapered sides or a combination of straight, tapered and curved sides.
The vessel is then redrawn through a series of dies, reducing its diameter and increasing its length with minimal change to the wall thickness.