Getting Path Centerline from imported surface

[zwei]

Is there a way to get the path centerline from an imported surface below?

(It was known that the surface should have a constant diameter and the path is a spline)

Step and parasolid file attached

[gupta9665]

Yes, check this video

[gt.adan]

Here are the steps :
(1) Use the "Face Curves" function to create four mutually symmetrical curves. (Pic 1)

(2) Use the "Lofted Surface" function to generate two mutually perpendicular surfaces from these four curves. (Pic 2)

(3) The curve obtained by using the "Intersection Curve" function is the center line. (Pic 3 & 4)