Just a for what it is worth.
Type K copper is the thickest walled and is what is put in concrete floors for residential water lines.
L is next and M is the thinnest.
I am not fond of M, after working with the other two it seems flimsy; it is primarily what Lowes and Home Depot sell though sometimes they have L as well.
They are frequently mixed up in the store's racks...
Check for the color code: K is green, L is blue and M is red; the inspector sure will.
Oh yes, and I use black pipe, it can take a serious bump, but yeah, like Bubba said, it rusts. |