17
Flexible pipes, tubes, hoses and fittings therefor (including valves), and fittings for rigid pipes, all non-metallic; Glands for pipes; Flexible hoses, not of metal; Non-metallic couplings for tubes; Non-metallic couplings for pipes; Non-metallic couplings for pipes; Non-metallic couplings for pipes; Non-metallic couplings for tubes; Non-metallic couplings for pipes; Non-metallic couplings for pipes; Non-metallic couplings for pipes; Pipe unions (Non-metallic -); Non-metallic couplings for tubes; Pipe fittings [junctions] (non-metallic -); Pipe insulation; Couplings; Pipe muffs, not of metal; Semi-worked plastic substances; Plastic material in extruded form for use in production; Plastics in the form of sheets, films, blocks, rods and tubes; Plastic substances, semi-processed; Recycled plastics; Recycled compound plastics; Recycled compound plastics for use in manufacture; Recycled plastics
19
Rigid pipes, not of metal, Non-metallic valves; Gutter pipes, not of metal; Branching pipes, not of metal; Rigid pipes, not of metal; Non-metallic pipes; Rigid pipes, not of metal, for building; Drain pipes, not of metal; Sewer pipes (Non-metallic -)