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.