Compressed air pipe fittings, not of metal; fibre-reinforced pipes for use as cable ducts; fibre-reinforced pipes for use as pipe casings; fibre-reinforced pipes for use as pipe sleeves; fibre-reinforced tubes for use as pipe casings; fibre-reinforced tubes for use as pipe sleeves; flexible pipes of plastics (other than parts of sanitary installations); flexible plastic pipe insulation; hose pipes made of plastic; insulation for pipes; insulation materials for pipes; insulations of synthetic material for the thermic protection of pipes; jackets (insulating) for pipes; non-metallic connecting apparatus for pipes; non-metallic connectors for pipes; non-metallic coupling sleeves for pipes; non-metallic fittings for pipes; non-metallic flexible hose pipes made of plastics materials; non-metallic flexible pipes (other than parts of sanitary installations); non-metallic frames for air pipes; non-metallic frames for water pipes; non-metallic insulated pipes; non-metallic pipe connections; non-metallic pipe linings; non-metallic pipes for use with pressurised fluids; non-metallic semi-rigid pipes for use with pressurised fluids; pipe flanges of plastic; plastic elbow bends for pipes (other than parts of sanitary installations); plastic pipe slides to accommodate pipe expansion; plastic pipes for transporting compressed air; plastic sheets for insulating pipes; reinforcing fibres, not of metal for pipes; reinforcing materials, not of metal, for pipes; thermally insulated pipes made of plastic

Branching pipes, not of metal; drain pipes, not of metal; non-metallic air pipes for buildings; non-metallic insulated pipes for water; non-metallic rigid pipes; plastic pipes (rigid) for water; rigid pipes (not of metal); rigid pipes of plastics (other than parts of sanitary installations; water-pipe valves, not of metal or plastic; water-pipes, not of metal