That ancient cast iron piping is well beyond its expected service life. Complete and total job security for an experienced plumbing contractor like yourself bro. All the best!
Looks like that tub is gonna have to get pulled to replace all that cast iron. Yikes! Gotta say, you and Carlos are a great duo and I enjoy y’all’s work ethic! Good work as usual
I see it very common with the actual fittings rather than the pipe itself, i had jobs where the pipe itself was done but its more common for the fittings to break