6
Valves of metal, other than parts of machines, for the control of process fluids, in particular for the oil and gas industry, for surface and underwater applications, in particular for oil rigs, petrochemical plants and electrical power plants; metal valves not being parts of machines for traditional and nuclear energy production plants; pipes of metal; junctions, of metal, for pipes; reinforcing materials of metal for pipes; components for the above valves of metal, namely metal flanges and gaskets
7
Valves being parts of machines; compressors for machines; pumps as parts of machines and engines; machines for the transportation of gas, namely, pneumatic transporters; lubricating pumps; hydraulic controls for machines and engines; compressed air machines; pneumatic transporters; pneumatic controls for machines and engines; hydraulic components, namely, hydraulic pressure reducers as parts of machines; hydraulic valve actuators for the purpose of pump control; pump controlled valves, globe valves, ball valves, butterfly valves, pinch valves and diaphragm valves, being parts of machines, all for the control of process fluids, in particular for the oil and gas industry, for surface and underwater applications, in particular for oil rigs, petrochemical and electrical power plants; pump control valves for traditional and nuclear energy production plants; components for the aforesaid valves, all being parts of machines, namely, valve stem seals, valve ball stops, valve gates, pump diaphragms and valve gaskets for engines
37
Repair, installation and maintenance of valves in the oil and gas industry; construction of valves for pipelines in the oil and gas industry
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