I have a project that I started today requiring the use of several of my 1 1/4" pipes First I sorted through to separate the sch 80 from the sch 40. I want to keep my sch 80 pipes for my air system not that sch 40 isn't more than sufficient. For the project I don't need the extra weight of the thicker pipe.
All of these pipes are between 12 and 16 feet long and most have a W300 T on at least 1 end Thes fittings are about 30 bucks each at the oilfield supply store so saving them only makes sense I need to cut off the treads from the pipes so if I wasn't interested in salvaging thed fittings I would have simply cut them off. I tried unscrewing a couple and it took all my pipe vice and a 36" pipe wrench could handle plus the teeth damaged the fitting horribly.
I did what I normally do in these instances, I grabbed my torch and made a small cut inside the pipe through the fitting then I could break them loose with an `8" pipe wrench and screw them off by hand
a quick touch up with a grinder and the pipe will be ready for welding