06
Industrial metal pipework used for the routing of all
liquids or gases (overhead and underground installations);
metal ducts for ventilation, air filtering and purification
(dust removal) installations, heating and fluid cooling
installations, air conditioning installations
11
Thermal installations, heat exchangers; ventilation, air
filtering and purification installations, heating and fluid
cooling installations, air conditioning installations
17
Bituminous membranes for sealing, insulating and sealing
materials, sealing fittings, caulking and stopping
materials, felts for insulating
19
Non-metallic building materials, in particular for
construction work, repair, maintenance, rebuilding and
renovation of pipeline systems for routing all liquids or
gases, power lines and all equipment for street systems,
miscellaneous networks, civil engineering structures and
civil engineering; cement, bitumen, bitumen emulsions,
concrete, mortar, rigid non-metallic piping systems,
non-metallic conduits and ducting used for the routing of
all liquids or gases (overhead and underground
installations)
37
Services for building, laying, repairing, maintaining,
rebuilding and renovating ducting networks for routing
(transport and distribution) all liquids or gases (gas,
drinking water, wastewater, rain water) power lines, civil
engineering structures; related works (drilling, pile
driving, construction of stations); building and laying
overhead and underground electricity transport and
distribution networks and public road and urban lighting
networks; building and laying distribution networks for
heating and for cooling for all fluids, thermal and
air-conditioning installations; work on street systems and
miscellaneous networks (urban developments, namely building
work on urban networks, roads, masonry construction), civil
engineering, earthworks and grading and all public works;
sanitary plumbing works; industrial plant maintenance,
transferring factories (building, relocation works)
40
Treatment of materials namely treatment of metals, welding,
sheet metal work with all metals
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