17
Plastics in the form of sheets, films, blocks, rods and tubes; Semi-worked plastic substances; Flexible hoses, not of metal; Flexible pipes, tubes, hoses and fittings therefor (including valves), and fittings for rigid pipes, all non-metallic; Flexible pipes, tubes, hoses, and fittings therefor, including valves, non-metallic; Couplings; Non-metallic couplings for tubes; Non-metallic couplings for pipes; Connectors (Non-metallic -) for hoses; Non-metallic couplings for rigid pipes; Couplings (Non-metallic -) for flexible pipes; Glands for pipes; Joint connectors (Non-metallic -) for pipes; Junctions, not of metal, for pipes; Insulating materials; Pipe insulation; Tube junctions (Non-metallic -); Fittings, not of metal, for flexible pipes; Non-metal pipe couplings and joints; Gaskets; Sealing and insulating materials; Pipe joint tape; Sealing gaskets (non-metallic -) [other than for ships]; Compounds for jointing; Pipe sealing compositions; Packing material for forming seals; Waterproofing film (plastic -) [other than for packaging]; Insulation sheets; Pipe linings (Non-metallic -); Pre-formed hose; Seals (Non-metallic -) for pipes; Pipe fittings [junctions] (non-metallic -); Pipe extensions (Non-metallic -); Plastics materials in the form of plates [semi-finished products]; Foils of plastics [semi-finished products]; Plastics materials in the form of sheets [semi-finished products]
19
Rigid pipes of plastics [other than parts of sanitary installations]; Branching pipes, not of metal; Ducting conduit installations (Non-electric -) of non-metallic materials; Non-metal ducts, not for electrical circuitry; Rigid pipes and valves therefor, non-metallic; Building panels, not of metal; Building boards of plastics materials; Cladding board (Non-metallic -)