[cmccuist]

PVC is the way to go for a garage. It's easy to work with and doesn't corrode like carbon steel pipe. Unless you have DRY, filtered air with about a -40 deg dew point, the carbon steel is going to rust on the inside.

You can do your whole garage in a day with PVC and it'll last for a long time.

You think copper or galvanized pipe doesn't rupture when it freezes? It does if it's full of water. So in the unlikely event you are standing right in the exact location, at the exact moment in time when a spool or joint of PVC lets go, yea, you'll get hurt.

I'm not changing out my piping for sweated joint copper or threaded galvanized, or even the best choice, stainless steel tubing.