Displaying plumbing lines in 2D/3D

[Siberian]

I'm drawing a plumbing system, but I would like the pipes to be displayed in 2D/3D, not just as single lines. It's probably easy to achieve, but I can't seem to find out how. Appreciate the help :)

[mcklem]

Plumbing Lines are strictly 2D elements...you can assign elevations but its for calculation purposes only. Apparently you must use piping for 2D/3D representation.

[LifeoRiley0]

We use the piping portion and then change the layer to say "hot water recirc" or whatever. We only do this if we have to show it in 3D though.