There are lots of ways. Simplest way - flexible coupling with appropriate connectors at either end, usually a compression joint or push-fit barbed connection of different sizes for both pipes.
it is used for plumbing
It is a copper pipe used in plumbing.
will carbon steel pipe touching copper pipe cause electrolysis in plumbing situations using water.
Copper pipe was common anywhere in US.
Do not have dissimilar metals touching the plumbing pipe. If it is copper pipe, do not have steel or tin or anything else other than bras or copper or plastic touching the pipe
socket for cleaning copper pipe
Water main coming into house usually 3/4" K copper pipe. Depending on local plumbing code, fitting usually is flared or soldered.
Does Maine have a plumbing code?
Either cut it out on the pipe with copper cutters or sweat it out with a plumbing torch.
Copper pipe is used in residential plumbing because copper is a durable material, proving to be strong against damages and so forming irregular bends with copper means it still remain stable. Essentially, copper is recyclable which is a good choice of material as it is environmental friendly.
YOU thread or braze copper pipe Copper tubling you solder, braze, flaire, compression ring, mechincal joints
Because you will then get a 'galvanic reaction'.