: Brian, They make a tool called a hack saw. It saws metal. cut about 6" from each end then unscrew the pipe. I hope you are a calm fellow as this could turn into your worst nightmare. Even us old timers fear working on the old galvanized. Have a good plumber on standby. Good luck with your project. Dale Peck LMP

Dale has the right tool to start with.
This piping is likely old, so be careful.

After you cut the pipe, you can thread male CPVC adapters into the elbows.
If you can flex the elbows apart a little bit, you can get a piece of CPVC in between.
If everything is rigid, you will need a threaded CPVC union.

Last, take a good look at the pipe you removed.
Is it very thin from internal/external corrosion?
Is it partially clogged by deposits/corrosion?
You may want to look at replacing all the galvanized pipe.

Good health, Weogo