Is this Orangeburg sewer pipe?

[lni (lusu ni)]

I saw bulgings along the pipe. Just want to confirm, is this Orangeburg sewer pipe?
The house was built 1950s. Inside the house section is definitely cast iron.

[mfellman (Matt Fellman)]

Looks like it… I’m not aware of any other pipe that will deform like that. The age is right inline too. You’ll often see it squishing into somewhat of an oval but that one looks pretty round still. Disclaimer: I’m not a sewer scoper but have watched 1000+ videos over the years as they have been performed.

[lkage (Larry Kage, CMI)]

It looks like it from here in N.MI…

[lni (lusu ni)]

Thanks, Matt. The shape is round, but I do saw several places had bulging. Does the bulging indicate the pipe is at the end of its service life?

[mfellman (Matt Fellman)]

Yeah, it’s considered a failure for sure. All the sewer guys I’ve seen come across it recommend replacement once it’s identified. They don’t really have the same SOP things like we do as far as “performing as intended.” Although, I don’t ever recall them finding it and not having some problems with it.

[lni (lusu ni)]

Kind similar. This is the connection part, you can tell its difference with cast iron.