https://extensions.sketchup.com/extension/80637e4a-8f8a-438f-85f0-da53a69314d8/eneroth-pipe
Give thickness to edges, e.g. to draw an architectural space frame, 3d-printable objects or objects made out of metal strings.
This extension re-uses the same component/group for all "pipes", reducing the file size and allowing for lated editing. It can also detect co-linear edges and draw a single contentious "pipe" along them.
Activated from Extensions > Eneroth Pipe or its toolbar.