That's not the whole story. Galvanized contrasted with copper: faster scale accumulation, harder to work with, more difficult repairs, and more self-welding. Wh

That's not the whole story. Galvanized contrasted with copper: faster scale accumulation, harder to work with, more difficult repairs, and more self-welding. When copper was cheap, it was the clear winner. Old galvanized is a PITA. No one uses cast iron anymore because it's a huge PITA and brittle. PS: MAPP (substitute) gas is the only way to do copper soldering. Propane is a waste of time.