23 FLUID SYSTEMS AND COMPONENTS FOR GENERAL USE 23.040 Pipeline components and pipelines 23.040.10 Iron and steel pipes 23.040.40 Metal fittings 23.040.45 Plastics fittings 23.040.99 Other pipeline component 23.060 Valves 23.060.40 Pressure regulators 23.060.50 Check valves 23.060.99 Other valves 55 PACKAGING AND DISTRIBUTION OF GOODS 55.230 Distribution and vending machines67 FOOD TECHNOLOGY 67.250 Materials and articles in contact with foodstuffs91 CONSTRUCTION MATERIALS AND BUILDING 91.090 External structures 91.120 Protection of and in buildings 91.120.99 Other standards related to protection of and in buildings 91.140 Installations in buildings 91.140.60 Water supply systems 91.140.65 Water heating equipment 91.140.70 Sanitary installations 91.140.80 Drainage systems 97 DOMESTIC AND COMMERCIAL EQUIPMENT. ENTERTAINMENT. SPORTS 97.040 Kitchen equipment 97.040.40 Dishwashers 97.040.50 Small kitchen appliances 97.060 Laundry appliances |