#2 Copper Tubing or Flashing. After you have cut and sorted your #1 copper, it's time to look at what you have left over. When you cut copper pipe you will probably be left with some pieces that have paint, tin solder, or Brass fittings attached. This will be separated as a #2 copper and should be priced below your #1 copper price. Sometimes copper pipes that have oil residue or may have .