17
Non-metallic couplings for tubes; Pipe connections (non-metallic -) [parts of rigid water pipes]; Pipe fittings [junctions] (non-metallic -); Glands for pipes; Non-metallic couplings for tubes; Pipe fittings [junctions] (non-metallic -) parts of rigid water pipes; Non-metallic couplings for tubes; Joint connectors (Non-metallic -) for pipes; Fittings, not of metal, for flexible pipes; Junctions, not of metal, for flexible pipes; Non-metallic couplings for pipes; Non-metal pipe couplings and joints; Non-metallic couplings for tubes; Junctions, not of metal, for flexible pipes; Non-metallic couplings for pipes; Flexible pipes, tubes, hoses and fittings therefor (including valves), and fittings for rigid pipes, all non-metallic; Non-metallic couplings for pipes; Non-metallic couplings for pipes; Pipe connections (non-metallic -) [parts of rigid water pipes]; Flexible pipes, tubes, hoses, and fittings therefor, including valves, non-metallic; Non-metallic couplings for pipes; Glands for pipes; Non-metal elbows for pipes; Flexible tubes, not of metal; Junctions, not of metal, for flexible pipes; Non-metallic couplings for tubes; Couplings
19
Drain pipes, not of metal; Drain traps [valves], not of metal or plastic; Drains [other than of metal or plastic]; Discharge pipes (Non-metallic -) for building installations; Street gutters, not of metal; Gutter pipes, not of metal; Sluices [channels], not of metal; Clay pipes and conduits; Ceramic drain pipes; Rigid underdrainage pipes, not of metal; Fire resistant collars (Non-metallic -) for pipes; Earthenware and cement tubes; Drain pipes, not of metal; Pipes of earthenware