6 FLEXIBLE PIPES AND TUBES, JOINTS, UNION PIECES, COUPLINGS, FITTINGS AND PARTS THEREOF ALL FOR PIPES AND TUBES, PIPE NOZZLES ALL MADE OF COMMON METAL
17 JOINTS, UNION PIECES AND COUPLINGS AND PARTS ALL FOR PIPES AND TUBES ALL MADE OF RUBBER, SYNTHETIC RUBBER OR OF PLASTICS, AND NON-METALLIC PIPES AND TUBES