7411 Copper tubes and pipes

7411 (01/1988-..) Copper tubes and pipes 74111010 (01/2011-..) Tubes and pipes of refined copper, straight 74111011 (01/1988-12/2010) Tubes and pipes of refined copper, straight, of a wall thickness of > 0,6 mm 74111019 (01/1988-12/2010) Tubes and pipes of refined copper, straight, of a wall thickness of <= 0,6 mm 74111090 (01/1988-..) Tubes and pipes of refined copper, in coils or otherwise bent 74112110 (01/1988-..) Tubes and pipes of copper-zinc base alloys `brass`, straight 74112190 (01/1988-..) Tubes and pipes of copper-zinc base alloys `brass`, in coils or otherwise bent 74112200 (01/1995-..) Tubes and pipes of copper-nickel base alloys `cupro-nickel` or copper-nickel-zinc base alloys `nickel silver` 74112210 (01/1988-12/1994) Tubes and pipes of copper-nickel base alloys 'cupro-nickel' or copper-nickel-zinc base alloys 'nickel silver', straight 74112290 (01/1988-12/1994) Tubes and pipes of copper-nickel base alloys 'cupro-nickel' or copper-nickel-zinc base alloys 'nickel silver', in coils or otherwise bent 74112900 (01/2000-..) Tubes and pipes of copper alloys (excl. copper-zinc base alloys `brass`, copper-nickel base alloys `cupro-nickel` and copper-nickel-zinc base alloys `nickel silver`) 74112910 (01/1988-12/1999) Tubes and pipes of copper alloys, straight (excl. copper-zinc base alloys `brass`, copper-nickel base alloys `cupro-nickel` and copper-nickel-zinc base alloys `nickel silver`) 74112990 (01/1988-12/1999) Tubes and pipes of copper alloys, in coils or otherwise bent (excl. copper-zinc base alloys `brass`, copper-nickel base alloys `cupro-nickel` and copper-nickel-zinc base alloys `nickel silver`)