Blender. How can i separate mesh / Edge I was wondering if its possible to separate from a mesh inly The edges, as curves, só i can later transformar that "tube" in geometry. 

Like in Max you can detach and choose The type of mesh, and if its a spline you can "mesh" it!

Thanks!!
In Object Mode press Alt+C and select Curve from Mesh/Text. Then in the curve properties under Fill select Full and to give it depth under Bevel increase Depth. Also use Resolution to make it more round.