6
Drain pipes of metal; Nozzles of metal; Manifolds of metal for pipelines; Air conditioning installations (ducts of metal for ventilating and-); Flanges (collars) of metal; Chimney shafts of metal; Smoke stacks of metal; Buildings of metal; Branching pipes of metal; Metal components; Pipe muffs of metal; Fittings of metal for cables; Ducts of metal, for central heating installations; Metal cable wire; Fittings of metal for compressed air ducts; Water pipes of metal; Penstock pipes of metal; Pipes and tubes of metal; Screws of metal; Cramps of metal [crampons]; Valves of metal (other than parts of machines); Valves of metal for water pipes; Junctions for pipes, of metal; Metal building materials
7
Pressure reducers (parts of machines); Pressure regulators (parts of machines); Pressure valves (parts of machines); Bellows (machines); Blowing machines for the compression, exhaustion and transport of gases; Filtration machines; Filters being parts of machines or engines; Cartridges for filtering machines; Electric current generators; Dynamos; Feeding apparatus for engine boilers; Steam engine boilers; Bellows (machines); Dust-removing installations for cleaning purposes; Pumps being machines; Pumps for heating installations; Conveyors (machines); Dust-exhausting installations for cleaning purposes; Separators; Air suction machines; Belt conveyors; Turbines other than for land vehicles; Heat exchangers (parts of machines); Valves being parts of machines or engines
9
Air analysis apparatus; Barometers; sensors; Pressure sensors; Dosimeters; Regulating apparatus, electric; Electric meters; Manometers; Water level indicators; Metering apparatus; Thermostats; Diagnostic apparatus not for medical purposes; Testing apparatus not for medical purposes; Heat regulating apparatus; Detectors; Smoke detectors; Solenoid valves (electromagnetic switches)
11
Structural plates for ovens; Safety accessories for water or gas apparatus and pipes; Boilers; Central heating radiators; Humidifiers for central heating radiators; Coolers for furnaces; Devices, apparatus and installations for refrigerating and heating; Heat-recovery apparatus; Heat exchangers, not parts of machines; Fans (parts of air-conditioning installations); Conduits for the delivery of water; Electric radiators; Filters (parts of domestic or industrial facilities); Filters for drinking water; Filters for air conditioning; Heaters; Water distribution installations; Extractors for chimneys; Solar collectors (heating); Domestic fireplaces; Chimney blowers; Heating boilers; Feeding apparatus for heating boilers; Steam boilers, other than parts of machines; Loading apparatus for furnaces; Gas scrubbing apparatus; Air-purifying apparatus and machines; Wastewater purifying apparatus; Heating appartus for solid, liquid or gaseous fuels; Electric space heaters; Water heating installations; Burners; Loading apparatus for furnaces; Ovens, other than for experimental purposes; Stoves (heating apparatus); Heat pumps; regulating accessories for water, gas or heating apparatus; Dampers (heating); Heat-recovery apparatus; Pipes (parts of sanitary installations); Water-pipes for sanitary installations; Drying apparatus and installation; Water purifying apparatus and machines; Devices, apparatus and installations for ventilating and air-conditioning; Extractor hoods for kitchens; Fans (air-conditioning); Heat accumulators
19
Constructions materials, not of metal; Frameworks, not of metal, for building; Pressure pipes (not of metal) (component parts); Drain pipes, not of metal; Doors, not of metal; Windows, not of metal; Pipes, not of metal, for ventilating and air conditioning installations; Non-metallic chimneys; Branching pipes, not of metal; Refractory building material, not of metal; Non-metallic rigid pipes for building; Water-pipe valves, not of metal or plastic
37
Building construction; Pipeline construction and maintenance; Factory construction; Cleaning and repair of boilers; Machines installation, maintenance and repair; Installation of doors and windows; Furnace installation and repair; Electric appliance installation and repair; Installation and repair of air conditioning apparatus; Building insulating; Heating equipment installation and repair; Building construction supervision; Demolition of buildings; Plumbing; Rental of construction equipment
42
Chemical analysis; Architecture; Technical research; Mechanics research; Construction drafting; Construction consultancy services; Research in the field of environmental protection; Technical project studies; Consultancy in energy consumption planning