Steel cylinders for compressed gas; metal bottles for compressed gas; pressure gas cylinders made of metal; gas cylinders made of metal; cylinders of metal for use with compressed gas; cylinders of metal for gas; metal cylinders for compressed gas or liquids [empty]; ducts made of metal for trunking conduits for gases; ducts made of metal for trunking pipes for gases; containers of metal for liquid gas; containers made of metal for use in the storage of gases; pressure gas vials made of metal; elbows of metal for connecting gas piping to gas appliances; metal gas pipe parts; containers of metal for compressed gas or liquid air; tanks of metal for the transportation of compressed gases; tanks of metal for the transportation of liquefied gases; tanks of metal for the storage of liquefied gases; tanks of metal for the storage of compressed gases; gas storage tanks of metal; metal pipes for liquid and gas transfer; metal tubes for gas; metal valves for controlling the flow of gases in pipelines.

Electric soldering apparatus; compressors for gases; gas converters; filters for gases [machines]; aerators; inert gas generators [machines]; gas welding machines; pumps for the extraction of gases [machines]; gas-operated soldering irons; blowing machines for the compression, exhaustion and transport of gases; fuel economisers for motors and engines.

Recorded computer software; protection devices for personal use against accidents.

Friction lighters for igniting gas; gas lighters; regulating and safety accessories for gas apparatus; regulating and safety accessories for gas pipes; regulating accessories for water or gas apparatus and pipes; safety accessories for water or gas apparatus and pipes; feeding apparatus for heating boilers; gas operated apparatus for cooking; gas pre-heating apparatus for industrial use; regulating apparatus for gas pipe installations; gas operated apparatus for heating; gas space heaters; heating apparatus for gaseous fuels; gas recovery apparatus; gas purifying apparatus; gas scrubbing apparatus; gas boilers; gas boilers [other than parts of machines]; gas fired boilers for producing domestic hot water; gas condensers, other than parts of machines; flues and installations for conveying exhaust gases; gas scrubbers [parts of gas installations]; gas operated devices used in cooling; pressure controllers [regulators] for gas pipes; gas regulators; regulating apparatus for gas apparatus; pressure supervision apparatus [safety apparatus for gas apparatus]; gas operated devices used in boiling; gas operated devices used in drying; gas scrubbers [parts of gas installations]; gas purifying devices; filters for gas extractors; filters for gases [household or industrial installations]; gas fired furnaces; gas fires; gas ovens; gas heat generators; cooling installations for gas; heating installations for use with gaseous fuels; gas fired heating installations; gas fired space heating apparatus; gas fuelled central heating installations; gas fired heating installations; installations for the burning off of gases; installations for controlling the flow of gases; processing installations for fuel and nuclear moderating material; gas scrubbing and purifying apparatus; installations for the collection of gases; gas purification installations; electrostatic precipitators for cleaning gases; gas scrubbing and purifying apparatus; gas operated apparatus for heating; reactors for gas reactions; reactors for gas-solids reactions; taps [cocks, spigots] [faucets (am.)] for pipes; boiler pipes [tubes] for heating installations.

Gas meter reading for billing purposes.

Construction of structures for the storage of natural gas; construction of structures for the transportation of natural gas; construction of structures for the production of natural gas; extraction of gas; machinery installation, maintenance and repair; installation of gas supply and distribution apparatus; installation of gas and water pipelines; installation of pipe systems for conducting of gases; beneath ground construction work relating to gas supply mains; beneath ground construction work relating to gas supply pipes; plumbing and gas and water installation; maintenance and repair of gas turbines; rental of gas or air compressors; boiler cleaning and repair; grout reinforcement for gas platforms; emergency servicing of gas supply apparatus; repair of gas cylinders; repair of gas supply systems; maintenance and repair of gas and electricity installations; repair or maintenance of gas water heaters; natural gas refuelling service for motor vehicles; drilling of deep oil or gas wells; gas drilling; oil and gas drilling; construction of prospecting pipelines; plant maintenance; construction of pipelines; building of underground structures; civil engineering construction; beneath ground construction work relating to pipework; construction of water supply systems; beneath ground construction work relating to water supply mains.

Storage of gaseous fuels; electricity distribution; distribution of energy; distribution of gas; gas supplying [distribution]; gas storage services; storage of gas; storage of liquefied natural gas on ships; pipeline transport of gases; transport of liquefied natural gas by sea; transportation of dry gas; transport and distribution of natural gas and liquefied gas; marine transport of liquefied natural gas.

Filtration of gases; incineration of gases; petroleum gas liquefaction; natural gas liquefaction services; energy production; generation of gas and electricity; purification of gases; refining of gas; recovery of hydrocarbons from gas; recycling of chlorofluorocarbon (CFC) containing gases; recycling of insulating gases from freezers; recycling of insulating gases from refrigerators; recycling of insulating gases from air conditioning plant; gas compression services; gas manufacture services; gas production services; chemical treatment of exhaust gases from fossil fuel combustion; processing of gas and oil; treatment of hazardous gases; processing of dry gas.

Conducting feasibility studies relative to gas exploitation; conducting feasibility studies relative to gas exploration; exploration and searching of oil and gas; geophysical exploration for the oil, gas and mining industries; monitoring of contaminated land for gas; technical design and planning of pipelines for gas, water and waste water; exploration of gas and oil; geophysical exploration for the gas industry; exploration services to locate gas; gas exploration; engineering services relating to gas transport and supply systems; engineering services in the field of electrical power and natural gas production; engineering services for the gas industry; research in relation to energy sources of all kinds; engineering design; design of storage systems; engineering services; civil engineering.

Scientific and technological services, research and design services in these fields, engineering services and design services of installations for production, processing, storage, routing and supplying of chemical and petrochemical apparatus, of oil or gas well and of oil or gas fields, including on-shore, marine or oil or gas wells and oil or gas fields, research services, engineering and technical calculations in the fields of extraction, production, refining, processing of petroleum, natural gas, refinery gases, gas, liquid gas and chemicals, development of industrial processes for processing petroleum, natural gas, refinery gases, gas, liquid gas and chemicals, exploration, analyses for oil and gas wells, consulting, research and development services in relation to reclamation of waste areas, installations and/or industrial processes, design services of railways, engineering services, design and development of installations and equipment, design of power generating plant, equipment and installations