Manufacture of metallic frames or framings for building
Design, building and installation of piping networks, including a complementary treatment of pipes to realize mainly pipes or networks under pressure
Manufacture of turbines and their pieces: water steam turbines or other kind of steam turbines, gas turbines, hydraulic turbines, water wheels and their regulators
Installation of secondary power supply systems (electrical generators)
Building of conveyance, distribution and water disposal networks
Building of gas, fuel transport networks, etc.
Building of transport and distribution lines for electricity
Building of lines and networks of telecommunication
Setting of electric cables and appliances
Setting of telecommunication systems and computer installations
Setting of monitoring systems and alarms against housebreakings
Setting of lighting and signalling systems for roads, railroads, port and airport installations (including the setting of notice boards)
Installation in buildings or in other projects of building of: pumbling systems and hygiene appliances, pipes for gas and water (except for heating), setting of automatic extinguishers, etc.
Setting of electrical installations of heating
Work of general installation
Assembling of elements of metallic structures, not made by the unit making the works
Production of engines and turbines, with the exception of engines used by aircraft, motor vehicles and motorized bicycles
Production of hydraulic equipment
Construction of distribution facilities for water and gas