I have an iron pipe underneath my slab. I busted it this morning when I was working on an adjacent pipe. It is a seam-split, parallel to the pipe's axis (i.e. the split runs long-ways on the pipe).
I feel like there's something I should be able to do to fix the dilemma, given that the pipe is right there, i.e. I already have a giant hole in the wall, the slab is already dug up adjacent to the pipe, I can reach underneath AND I have a direct vertical access to the hole, only about 6 inches from the split.
I've heard about these sort of "stents" similar to an artery stent, made to patch pipes from the inside - I've also considered cutting the pipe off underneath the slab and attaching a new fitting (though I would feel like the pipe, at this point, wouldn't be durable enough to accept a new fitting if it's in the habit of splitting at the seams).
I've also given some consideration to fiberglass repair kits, like those sold by Fernco
I really would like some input from others. What are my options to fix the dilemma?