Casings of synthetic rubber for pipes; Casings of synthetic rubber for tubes; Chemical compositions for lining pipes to repair leaks; Coating materials for insulating pipes; Connectors, not of metal, for pipes and hoses; Flexible pipes (not of metal); Flexible tubes, not of metal; Identification sleeves of plastics for pipes; Insulation for pipes; Non-metallic connectors for tubes; Non-metallic fittings for pipes; Non-metallic flexible hoses; Non-metallic insulated pipes; Non-metallic pipes for use with pressurised fluids; Closed cell insulation used in air conditioning apparatus; Closed cell insulation used in refrigeration apparatus