6
Pipes, tubes and hoses, and fittings therefor, including valves, of metal; Pipelines (Manifolds of metal for -); High-pressure pipelines (of metal); Valves of metal, other than parts of machines; Valve assemblies of metal [other than parts of machines]; Pipes of metal; Joint connectors (Metal -) for pipes; Fittings of metal for pipes; Metal hose fittings; Metal pipe fittings; Metal joinery fittings; Pipe fittings [junctions] of metal; Tanks of metal; Storage tanks of metal; Gas storage tanks of metal; Metal tanks [containers]; Roofing of metal, incorporating solar cells
7
Oil refining machines; Steam/oil separators; Separators for oil; Oil separators [machines]; Oil and gas extraction and mining equipment; Oil and gas production and transportation equipment; Oil tanks [vehicle engine parts]; Oil tank plugs and caps [vehicle engine parts]; Valves; Valves [parts of machines]; Valves as machine components; Valves being parts of pumps; Hydraulic valves [parts of machines]; Pressure control valves being parts of machines; Pressure regulating valves parts of machines; Non-return valves of plastic [parts of machines]; Non-return valves of metal [parts of machines]; Pumps; Pumps [machines]; Valves for pumps; Pumps, compressors and blowers; Pumps as parts of machines, motors and engines; Solar power generators; Electrical generators using solar cells
37
Oil pumping; Oil drilling; Oil extraction services; Oil drilling services; Oil pipeline construction; Oil pipeline laying; Exploitation [extraction] of oil from oil-fields; Oil and gas drilling; Pumping of oil-wells; Oil-field exploitation for the extraction of oil; Installation of oil refineries; Oil pumping and extraction; Installation of oil pipelines; Oil burner servicing and repair; Installation of oil exploration instruments; Installation of oil production apparatus; Oil well casing, tubing, and drill pipe installation; Construction of structures for the transportation crude oil; Construction of structures for the production of crude oil; Construction of structures for the storage of crude oil; Maintenance and repair of oil and gas storage installations; Servicing of pipelines; Installation of pipelines; Laying of pipelines; Construction of pipelines; Pipeline installation and repair; Pipeline construction and maintenance; Installation of onshore pipelines; Installation of offshore pipelines; Pipeline construction; Pipeline maintenance; Pipeline laying; Installation of gas pipelines; Laying and construction of pipelines; Maintenance and repair of pipelines; Maintenance and repair of pipeline systems; Services for the repair of pipelines; Clearing of pipework systems used in the refining industries; Maintenance and repair of oil refining machines, oil and gas extraction and mining equipment, and oil and gas production and transportation equipment, and parts thereof
39
Oil distribution services; Transport of oil; Transportation of crude oil; Transportation of heavy fuel-oil; Transportation of oil by pipeline; Pipeline (Transport of oil by -); Transmission of oil or gas through pipelines; Information services relating to the transportation of crude oil; Pipeline transport of liquids; Pipeline transport of gases; Pipeline (Transport by -); Transport by pipeline; Transport of fuels by pipeline; Distribution by pipeline and cable; Transportation of petroleum; Information services relating to the transportation of petroleum; Gas supplying [distribution]
40
Oil refining; Refining of oil; Processing of oil; Oil refinery services; Oil (Processing of -); Refining; Refining services; Refining of petroleum products; Petrochemical refining services; Processing of chemicals and petrochemicals
42
Exploration services in the field of the oil, gas and mining industries; Analysis and testing services in the field of oil exploitation; Analysis and testing services in the field of oil exploration; Analytical and testing services for oil workings; Provision of technical consultancy to the oil refining industry; Design of pipelines; Pipeline inspection services; Technical design and planning of pipelines for gas, water and waste water; Provision of technical consultancy to the petrochemical industry