HS CodesXV · Base metals and articles of base metal74 · Copper and articles thereof7411741122741122Chapter 74Copy pageOf copper-nickel base alloys (cupro-nickel) or copper-nickel-zinc base alloys (nickel silver)DescriptionCopper tubes and pipes : Of copper alloys : Of copper-nickel base alloys (cupro-nickel) or copper-nickel-zinc base alloys (nickel silver)Was this page helpful?YesNoPrevious741121Of copper-zinc base alloys (brass)NextOther741129