Individual pipe elements can be pipes or rigids. I rigid element has a stiffness based on the entered OD & wall thickness using the calculated ID and 10 times wall. You can also specify the weight of these rigid elements.

So, it's a collection of pipes & rigids.

If you do not expect any relative distortion of this assembly, I'd run it as a single rigid element; of maybe two if you want to go up first, then over.