@baukepost gave a great answer, the only thing that I’d add is that I would try using bevels instead of subsurf for this if you’re aiming to bake this down and use it in Unity. The main reason is that the subdiv version is much more circular at the ends of the pipes, and that mismatch will make the front part of the baked lowpoly version look weird since the rays from the edges that poke out won’t have anything to hit.