Relocating Cast Iron Radiators? I'm in the middle of major renos and will entail to relocate...

I'm in the middle of major renos and will entail to relocate some of my cast iron hot-water radiators. I have read that the easiest style to do so is to cut the steel pipes running to & from the radiator and to re-attach them upon moving. Sounds simple enough but once they are cut will the steel pipes (with layers of paint) "unscrew" themselves from the section and the supply pipe? Is it possible that the steel has "seized". The operation seems pretty straighforward; I'm in recent times thinking that I may be missing some tips or pointers.

Anyone care to help or share their experience?

gratitude in advance!
How do you sort a wooden breadboard?
Answers:    I doubt the pipe is steel, it's probably Iron. It have likely been within for decades, so once you mess with it, you will undoubtedly have some problems & leak. If you're not up to re-threading and replacing a lot of pipe, you might want to have a plumber on standby, especially one who have experience with these. Moving the radiators might get you into alike issues, as they are put together in sections.

BTW; I envy you for have real working radiators.. that's the nicest kind of fry a house can have. I really miss them. Best of luck to you!