Hi
Go to Generative Surface Design> Insert> Wireframe> Helix.
The Input For Helix is a Starting point(Radius of the tubing coil) and a Axis of Revelution.
After Creating Helix create a Plane Normal to the Helix at any one of its end. (Plane> Normal to Curve> select helix> select any one of the end point.)
Create a 3D Circle on the plane and "the endpoint of Helix as Circle center" of desired Radius( Insert> Wireframe> Circle> Endpoint of Helix where Plane is created> created Plane for support> Dia of the wire> whole circle Option).
Go to part Design, use Rib command to create ur Tubing
(Rib> Circle> Helix> Pulling direction> Axis of revelution of the Helix).
Hope u get it
Regards
Ganesh.N
ganesh.n@engg.tjc.co.in