Push Bending
From ATTWiki
A style of bending where the bend arm is moved positive a few degrees, then the tube is pushed through a set of rollers. This achieves a large radius bend.
Typically, there is a single smaller roller on the clamp die. A larger roller opposes that as the bend die. Two rollers of the same CLR are on the pressure die assembly. All four rollers rotate freely. The tube is pushed through these rollers to create a large radius bend.
