(2" x 2-1/2" ) Bush GI Fitting.
- GI (Galvanized Iron) is steel, which has been galvanized by the application of a protective coating of zinc, which reduces rust and corrosion.
- GI replaced cast iron and lead pipes in the early 20th century as the staple plumbing pipe.
- GI pipes are preferred due to their strength and durability. These pipes have a life expectancy of about seventy years.
- However, pipe longevity depends on the thickness of zinc in the original galvanization and whether the pipe was galvanized on both the inside and outside or just the outside.