Perhaps this is common knowledge, but I just found out that standard home improvement stores (HD, LO) do not carry Sch 80 conduit. I was always under impression that they would, and they even list it online, but it seems it is never available and cannot be ordered. That's also what staff at the store kinda confirmed, too (a funny thing was that the plumbing manager at LO thought that the electrical department would have a lot of stock...). They have some adapters and fittings that are SCH80, but no straight runs of conduit.
Does anyone know why that's the case? Seems like a pretty standard item to have. Just curious.