Copper Pipe & TubeChina DIN 1785 Cuzn28sn Admiralty Brass Tubes, CZ111 Uns C44300 Brass Tube Heat Exchanger, Find details about China Uns C44300 Brass Tube, Uns C44300 Copper Pipe from DIN 1785 Cuzn28sn Admiralty Brass Tubes, CZ111 Uns C44300 Brass Tube Heat Exchanger