MANDREL BENDING                          

Mandrel Bending uses a metal shaft, or mandrel fitted inside the steel tube or pipe. As the mandrel moves, it bends the metal around the appropriate sized die to form the radius.

Mandrel bending can bend hollow sections very tight, it works best when the steel tube or pipe has a heavy wall and/or requires a tight radius, this prevents the material from rippling. Mandrel Bending can bend steel tubing up to 180 degrees, producing a bend that  is uniform all the way  up and down  the pipe or tube.