Sand it lightly with very fine sandpaper
Wall thickness
Lots or reasons really. Copper does not rust, and its easier to repair if the pipe does happen to fail. Pex may be a more viable option if this is a DIY project due to cost of copper and skill required to solder connections. Depends on the applications such as waste, vent ,water supply. Copper Pipe is no longer used because of cost so many settle for copper tubing or Red Brass pipe 85% copper 15% zinc
Usually they don't. The only reason would be because you applied red stencil ink.
Absolutely, positively, YES as both are non ferrous metals and there is no possibility of galvanic corrosion or electrolytic action taking place. Presuming your taking about RED BRASS as opposed to Yellow
sorry you cant jump the red pipe. Bowser has to get shocked by that alarm system.
Red
Copper is typically mixed with gold to create a red hue. The higher the copper content in the alloy, the redder the gold will appear.
Just walk into it
Red Brass is a Brass and Nugold is a Bronze! Brass is Copper alloyed with Zincwhereas Bronze is Copper alloyed with TIN. Red Brass is typically 85% Copper and 15% Zinc.Nugold is 90% Copper and 10% Tin. ~ the Silver Strumpet
No.
copper
Any pipe dope will work but Teflon tape is a lot cleaner.