I want to pose a question.
You have an old 2" steel threaded 90 with a pipe on it and you need to remove the pipe. You put your 2' pipe wrench on it and it won't budge. So you get out your trusty torch and heat it up and bingo out comes the pipe because you heated the fitting and it expanded.
Right?
Here is my question.
When you heat steel it expands, but I don't think it expands in only one direction. I think it expands from the center outward which would make it expand away from the threads on the outside of the fitting but towards the threads on the inside of the fitting.
What say ye O wize ones.
You have an old 2" steel threaded 90 with a pipe on it and you need to remove the pipe. You put your 2' pipe wrench on it and it won't budge. So you get out your trusty torch and heat it up and bingo out comes the pipe because you heated the fitting and it expanded.
Right?
Here is my question.
When you heat steel it expands, but I don't think it expands in only one direction. I think it expands from the center outward which would make it expand away from the threads on the outside of the fitting but towards the threads on the inside of the fitting.
What say ye O wize ones.