6
Pipes and tubes of metal; Waste pipes, Drainage channels, drainage boxes, drainage grids and gullies, All of metal, For sewage engineering and soil drainage, including bathroom, floor, ceiling, balcony, cellar, yard and roof drains; Stink traps; Pipe glands; Pipe connectors, junctions and couplings; Drainage grids and grilles; Shaped metal sections; Corner and edge protection profiles, tile and wall edging profiles, building expansion profiles, All of metal; Angle frames of metal; Protective covers of metal, In particular shafts, fireplaces and Building components; Inspection doors of metal; Containers of stainless steel
7
Wastewater pump stations, Mainly consisting of pumps and containers; Sewage treatment machines; Pressurisation units; Pressure boosting systems for water supply; Pressure boosting systems for water recycling systems, separation units; Pump systems for fire extinguishing technology; Mechanical pumps being parts of water machines, process water usage machines and water recycling machines; Separators for separating solids from liquids; Separators for liquids; Liquid separators for separating water from liquid or solid pollutants and contaminants
9
Energy storage installations and systems
11
Urinal channels, washing troughs; Grease, starch, petrol and oil separators, included in class 11; Collection chambers for wastewater; Slurry tanks, sludge traps, dirt filters, all being parts of sewage, water and rainwater purification installations; Extractor hoods for kitchens; Wastewater and water purification machines; Rainwater purification machines; Sewage, water and rainwater filters being parts and accessories for sewage, water and rainwater purification machines; Installations for water treatment; Installations for purification of greywater; Small clarifying installations; Installations for water management; Heat exchangers, not parts of machines; Heat accumulators; Heat storage installations and systems; Sliding plate fire dampers
17
Packing, stopping and insulating materials; Gaskets made of plastics
19
Building materials (non-metallic); Non-metallic rigid pipes for building; Drain pipes; Drainpipes, drainage channels, drainage boxes, drainage grids and gullies, not of metal, for sewage engineering and soil drainage, including bathroom, floor, ceiling, balcony, cellar, yard and roof drains; Drain coverings and grating and associated corner frames of plastic; Non-metallic transportable buildings; Tanks; Containers, not of metal [storage, transport]
20
Drains [valves] made of plastic; Water storage tanks, not of metal (structures); Portable water carriers [containers] made of plastics
37
Installation, cleaning, repair and maintenance work on and for sewage, water and rainwater purification installations, water treatment installations and sanitary installations
42
Technological planning services