Flexible non-metallic pipes; flexible non-metallic tubes; flexible ducting of plastic, flexible ducting of rubber; flexible plastic films other than for packaging; sheaths of plastic materials, sheaths of elastomeric materials; parts, fittings and accessories for all the aforementioned goods

Non-metallic pipes; non-electric ducting conduits not of metal; parts, fittings and accessories for all the aforementioned goods all being non-metallic

acoustic insulation materials; pipe insulation materials; acoustic insulators; acoustic insulants; thermal insulating materials; insulating materials

Common metals and their alloys; metal building materials; copper and copper pipes; metallic pipes and tubes, pipe and tube parts and fittings; pipe and tube parts and fittings of metal and plastics, including such goods made of metal and having their external and internal surfaces covered by plastics materials; Insulated metal tubing (other than parts of machines, engines or motors; Insulated metal pipes (other than parts of machines, engines or motors; pre-insulated cooper tubes with thermal nitrile rubber insulation

Closed cell insulation used in air conditioning apparatus; coating materials for insulating pipes; coating materials for insulation purposes; elastomeric sealing material being vapour impermeable; elastomeric sealing material being liquid impermeable; flexible elastomeric thermal insulation; insulating materials for insulation against heat; insulating materials for use in fire protection; insulating materials in the form of tubes; insulating materials in the form of sleeves; Insulation materials for pipes; jackets (insulating) for pipes; pipe wrappings for insulation purposes; thermal insulating materials; thermal nitrile rubber insulation for cooper tubes

Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, not of metal