
- 13 Development (Service)
- 14 Logistics (Service)
- 15 Maintenance (Service)
- 16 Food, beverage, tobacco
- 17 Machine, device (for special applications)
- 18 Equipment f. mining, metallurgical plant, rolling mill a. foundry
- 19 Information, communication and media technology
- 20 Packing material
- 21 Plant equipment, tool
- 22 Construction technology
- 23 Machine element, fixing, mounting
- 24 Office product, facility and technic, papeterie
- 25 General service
- 26 Energy, extraction product, secondary raw material and residue
- 27 Electric engineering, automation, process control engineering
- 28 Vehicle (complete vehicle)
- 29 Home economics, Home technology
- 30 Auxiliary supply, additive, cleaning agent
- 31 Polymer
- 32 Laboratory material, Laboratory technology
- 33 Installation (complete)
- 34 Medical Device
- 35 Semifinished product
- 36 Machine, apparatus
- 37 Industrial piping
- 37-01 Metal or plastic fitting
- 37-02 Pipe system (steel)
- 37-03 Pipe system (non-ferrous metal)
- 37-04 Pipe system (enameled)
- 37-05 Pipe system (glass)
- 37-06 Pipe system (thermoplastic)
- 37-11 Hose piping
- 37-12 Pipe system (lined)
- 37-14 Pipe system (thermosetting plastic, GRP)
- 37-15 Pipeline technology (pneumatics)
- 37-16 Pipeline technology (hydraulics)
- 37-17 Pipeline technology (vacuum)
- 37-20 Pipe connection for metallic piping
- 37-21 Expansion joint, absorber
- 37-21-01 Expansion joint (metal-,plastic piping)
- 37-21-01-01 Axial expansion joint
- 37-21-01-02 Angular expansion joint
- 37-21-01-03 Lateral expansion joint
- 37-21-01-04 Corrugated bellow
- 37-21-01-05 Universal expansion joint
- 37-21-01-90 Expansion joint (metal-,plastic piping, unspecified)
- 37-21-01-91 Expansion joint (metal-,plastic piping, parts)
- 37-21-01-92 Expansion joint (metal-,plastic piping, accessories)
- 37-21-02 Absorber in pipelines
- 37-21-90 Expansion joint, absorber (other)
- 37-21-01 Expansion joint (metal-,plastic piping)
- 37-22 Pipe system (pre-insulated)
- 38 Inorganic Chemical
- 39 Organic Chemical
- 40 Occupational safety, accident prevention
- 41 Marketing
- 42 In-vitro diagnostic
- 43 Optics
- 44 Automotive engineering, vehicle component
- 45 Human and veterinary drug, pesticide as well as active ingredient
- 46 Clothing and textile
- 47 Body care, personal hygiene
- 48 Sport, playing, leisure
- 49 Public safety and military technology
- 50 Interior furnishing
- 51 Fluid power
- 90 Interim class (unspecified)