Helical coil
From ATTWiki
A helix (pl: helixes or helices) is a curve that forms a spiral or a coil in space.
CNC Bender uses push bending with a rotational twist in the Rotation axis to create helical tube or pipe coils used in heat transfer and immersion applications.
Coil Pitch
The pitch of a helix is the width of one complete helix turn, measured along the helix axis.