I am sorry, but can you PLEASE rephrase your question? Can WHAT be used for copper pipe? When? How? Why?
It is copper oxidation.
it is used for plumbing
What kind of pipe, the inside or outside, or a tobacco pipe? If it is copper pipe, you can use an emery sand cloth or steel wool.
You can use copper pipe.
Copper pipe was common anywhere in US.
It is a copper pipe used in plumbing.
It is the THINNEST ply of copper pipe and is ONLY used for heating purposes like baseboard heating!
Copper can rust
Take either an SOS pad or a wire brush and rough up both the inside of the brass fitting and outside of copper pipe, put the copper pipe into the fitting and solder around it.
It is not a good idea to use copper pipe with natural gas as any sulphur compounds in the gas can cause an oxide to form in the copper pipe. Often copper is used with propane. In these instances, soft copper tubing is usually used with compression fittings. The tools required are, pipe cutter and 2 wrenches.
A hatchet copper? The only thing that comes to mind is a clip that is used to hold copper pipe up. It is driven into wood and has a curved section to support the pipe. A copper hatchet or brass hammer is used when you do not want to damage what you are hammering.