Price of copper tubing!

Yeah I have brazed plenty of sheet metal (steel) over the years, none recently though. Never tried to braze any other type of metal.
I know that with copper there is a type k,L and M kind of like pvc or steel with the different schedules, (40, 80, 120) for different pressure ratings, but are there different fittings L,T, cross, etc for higher pressure copper?