It will glue it together but it will not weld it together. It will not pass code. It will work if there is NO stress on the pipe.... It's the kind of thing I would do but would not recommend. As for 11 1/4 ABS... I don't know... I don't use the stuff. I don't like it. Parts are too hard to find for it. The only time I ever see ABS around here is in mobile homes, occassionally in drain pipes, but not sewer pipes in houses.