1
Gases for industrial purposes; Industrial gases for use in fabrication; Industrial gases for use in electronics; Protective gases for welding; Gases for use in flame spraying; Laboratory gases; Test gases; Ice (Dry -) [carbon dioxide]; Ice (Dry -) [carbon dioxide]; Heavy water; Carbide; Gas mixtures for use in science; Gas mixtures for use in industry; Hydrocarbons; Gaseous hydrocarbons; Gaseous hydrocarbon compounds
5
Gases for medical purposes; Solidified gases for medical purposes; Gas mixtures for medical use
6
Steel cylinders for liquid air; Steel cylinders for compressed gas; Pressure gas cylinders made of metal; Metal fluid storage tanks; Pipework of metal; Nozzles of metal; Tanks of metal
7
Stop valves [parts of machines]; Stop valves of metal [parts of machines]; Safety valves [parts of machines]; Metal safety valves [parts of machines]; Pressure regulating apparatus being parts of machines; Reducers (Pressure -) [parts of machines]; Valves [parts of machines]; Pressure controllers [valves] being parts of machines
9
Quantity indicators; Measuring instruments; Optical measurement apparatus; Digital measuring apparatus; Acoustic meters; Electronic meters; Measuring instruments; Measuring apparatus and instruments; Signalling apparatus; Signalling apparatus
11
Stop valves for regulating gas; Stop valves being safety apparatus for gas apparatus; Safety valves for gas pipes; Safety valves for gas apparatus; Installations for the collection of gases; Installations for the burning off of gases; Filters for gases [household or industrial installations]; Filters for cleaning gases [parts of household or industrial installations]; Valves [plumbing fittings]; Installations for controlling the flow of gases; Freezers; Freezers; Deep freezing apparatus; Refrigerating and freezing equipment; Taps for regulating gas flow; Taps [faucets]
37
Installation of plant; Maintenance and repair of gas turbines; Maintenance and repair of storage tanks; Maintenance and repair of storage tanks; Laying and construction of pipelines; Servicing of pipelines; Installation of pipework systems; Repair of gas supply systems
42
Engineering design and consultancy