17
Non-metal elbows for rigid pipes; Articles of rubber for use in connecting pipes; Non-metallic couplings for pipes; Glands for pipes; Non-metallic couplings for tubes; Non-metallic couplings for pipes; Fittings, not of metal, for flexible pipes; Non-metallic coupling sleeves for tubes; Non-metallic couplings for pipes; Casings of synthetic rubber for tubes; Pipe wrappings for insulation purposes; Insulations of synthetic material for the thermic protection of pipes; Pipe wrappings of rubber for protective purposes; Pipe extensions (non-metallic -) [parts of rigid water pipes]; Pipe connections (non-metallic -) [parts of rigid water pipes]; Pipe connections (non-metallic -) [parts of rigid water pipes]; Non-metal fittings for flexible compressed air pipes; Pipes made of plastic for motor vehicles; Flexible tubes, not of metal; Pipe fittings [junctions] (non-metallic -) parts of rigid water pipes; Non-metallic couplings for tubes; Fittings [non-metallic] for flexible pipes; Non-metallic insulated pipes; Non-metallic insulated pipes; Non-metallic couplings for tubes; Non-metallic couplings for tubes; Non-metallic couplings for pipes; Non-metallic couplings for rigid pipes; Plastics in the form of sheets, films, blocks, rods and tubes; Identification sleeves of plastics for tubes; Identification sleeves of rubber for tubes; Insulation jackets for industrial pipes; Non-metallic underground tubing; Insulation for underground pipes and tanks; Pipe insulation; Casings of rubber for tubes; Rubber tubes and pipes; Pipe gaskets; Flexible pipes, tubes, hoses and fittings therefor (including valves), and fittings for rigid pipes, all non-metallic; Flexible plastic conduits for plumbing use; Non-metallic couplings for pipes; Pipe joint tape; Seals (Non-metallic -) for pipes; Seals (Non-metallic -) for gas pipes; Chemical compositions for lining pipes to repair leaks; Pipe linings (Non-metallic -) for sealing pipes; Pipe linings (Non-metallic -); Inflatable articles for sealing pipes to allow welding; Inflatable articles for sealing pipes to allow cutting; Joint connectors (Non-metallic -) for pipes; Glands for pipes; Junctions, not of metal, for flexible pipes; Pipe sealing compositions; Pipe joint compound
19
Pre-insulated bonded pipes (Non-metallic -) for building; Rigid pipes of plastics [other than parts of sanitary installations]; Clay pipes and conduits; Non-metal air conditioning ducts; Rigid pipes, not of metal [building]; Cement mortar pipes; Pipes made of cement for use in building; Pipes made of cement; Earthenware and cement tubes; Pipes of earthenware; Sandstone tubes; Non-metallic rigid pipes for building; Non-metallic pipes for roof drainage installations; Non-metallic air pipes for buildings; Non-metal ducts, not for electrical circuitry; Plastic pipes for plumbing purposes; Drain traps [valves], not of metal or plastic; Drain pipes, not of metal; Ducts made of plastics for trunking pipes for gases; Insulated pipes (Non-metallic -) for water; Wooden pipes; Non-metal heating ducts; Rigid pipes and valves therefor, non-metallic; Rigid pipes, not of metal; Rigid underdrainage pipes, not of metal; Fire resistant collars (Non-metallic -) for pipes; Downspouts, not of metal; Penstock pipes, not of metal; Drain pipes, not of metal; Concrete pipes; Branching pipes, not of metal; Sewer pipes (Non-metallic -); Ceramic drain pipes; Discharge pipes (Non-metallic -) for building installations; Drains [other than of metal or plastic]; Gutter pipes, not of metal