This class includes:
- manufacture of internal combustion piston engines, except motor vehicle, aircraft and cycle propulsion engines:
- marine engines
- railway engines
- manufacture of pistons, piston rings, carburetors and such for all internal combustion engines, diesel engines etc
- manufacture of inlet and exhaust valves of internal combustion engines
- manufacture of turbines and parts thereof:
- steam turbines and other vapour turbines
- hydraulic turbines, waterwheels and regulators thereof
- wind turbines
- gas turbines, except turbojets or turbo propellers for aircraft propulsion - manufacture of boiler-turbine sets
- manufacture of turbine-generator sets
- manufacture of engines for industrial application
This class excludes:
- manufacture of electric generators (except turbine generator sets), see CAEN 2711
- manufacture of prime mover generator sets (except turbine generator sets), see CAEN 2711
- manufacture of electrical equipment and components of internal combustion engines, see CAEN 2931
- manufacture of motor vehicle, aircraft or cycle propulsion engines, see CAEN 2910, CAEN 3030, CAEN 3091
- manufacture of turbojets and turbo propellers, see CAEN 3030