Heading 7411: Copper tubes and pipes:

Of refined copper Seamless

Seamless Having an outside diameter of 6 mm or more but not exceeding 16 mm, in coils on spools

Seamless Other

Of refined copper Other

Of copper-zinc base alloys (brass) Seamless

Of copper-zinc base alloys (brass) Other

Of copper alloys Of copper-nickel base alloys (cupro-nickel) or copper-nickel-zinc base alloys (nickel-silver)

Other Seamless

Other Other