Flexible hose of non-metallic materials; flexible hose pipes of plastic; flexible hose pipes of rubber; flexible hoses composed of plastics; flexible hoses made of polymeric materials; flexible pipes (not of metal); flexible pipes for transporting coolants in air-conditioning systems; PEX pipes (crossed-linked polyethylene); flexible pipes made principally of cross-linked polyethylene with a middle layer of aluminium tubing; flexible pipes made of polymeric materials; flexible pipes of nonmetallic materials (other than parts of sanitary installations); flexible pipes of plastics (other than parts of sanitary installations); flexible tubing of non-metallic materials; flexible tubing of plastics; insulated flexible hoses of non-metallic materials; non-metallic flexible corrugated hoses (other than for sanitary installations); non-metallic flexible corrugated pipes (other than for sanitary installations); non-metallic flexible corrugated tubes (other than for sanitary installations); nonmetallic flexible hoses; non-metallic flexible pipes (other than parts of sanitary installations); pipes made of synthetic flexible material; pre-insulated bonded flexible non-metallic hoses; fittings (nonmetallic) for flexible pipes; non-metallic couplings for flexible pipes; non-metallic elbow joints for flexible pipes; accessories of plastic for pipelines; caulking compounds for use in preventing leakage from pipes; chemical compositions for lining pipes to prevent leaks; chemical compositions for lining pipes to repair leaks; chemical compositions for sealingly adhering together pipe joints; flexible connectors for splicing pipes; inflatable articles for sealing pipes to allow cutting; inflatable articles for sealing pipes to allow welding; insulation for pipes; insulation materials for pipes; insulations of synthetic material for the thermic protection of pipes; jackets (insulating) for pipes; joint packings for pipes; junctions, not of metal, for pipes; non-metallic pipe sleeves; non-metallic pipe spacers; non-metallic pipe unions; non-metallic pipes for use with pressurised fluids; non-metallic sealing rings for pipe fittings; non-metallic seals for gas pipes; non-metallic seals for pipes; non-metallic semi-rigid pipes for use with pressurised fluids; pipe end protectors made of plastics materials; pipe end protectors made of rubber materials; pipe flanges made from synthetic materials; pipe flanges of plastic; pipe gaskets; pipe jackets, not of metal; pipe jointing compounds for preventing leakage; pipe jointing compounds for preventing rusting; pipe jointing compounds for sealing cracks; pipe jointing compounds for sealing pipe threads; pipe muffs, not of metal; pipe outlets, not of metal; pipe sealing compositions; pipe support sleeves (rubber); pipe thread tapes for sealing; pipe wrappings for insulation purposes; pipe wrappings of rubber for protective purposes; pipes made of plastic for motor vehicles; pipes made of rubber for motor vehicles; 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; silicon rubber pipes; sleeves for fire proofing plastic pipes; thermally insulated pipes made of plastic; compressed air pipe fittings, not of metal; non-metallic pipe fittings (junctions); non-metallic sealing rings for pipe fittings