Been looking into changing the pipes in the house ans was wondering what the difference is that I see in catalogs about 2 types of galvanzied pipe? In the old days there was only one galv pipe for cold water plumbing. Why now are there 2 different a lighter and a heavier pipe?
Can you tell me which might compare with the pipe of say 97 years ago? Are they making a hinner and a heavier version now so people can sell the option of better or worse and is there such a thing?