| 45231400 |
Construction work for electricity power lines |
Construction work for pipelines, communication and power lines |
| 45232140 |
District-heating mains construction work |
Ancillary works for pipelines and cables |
| 45232451 |
Drainage and surface works |
Ancillary works for pipelines and cables |
| 45232450 |
Drainage construction works |
Ancillary works for pipelines and cables |
| 45310000 |
Electrical installation work |
Building installation work |
| 45231223 |
Gas distribution ancillary work |
Construction work for pipelines, communication and power lines |
| 45231221 |
Gas supply mains construction work |
Construction work for pipelines, communication and power lines |
| 45231100 |
General construction work for pipelines |
Construction work for pipelines, communication and power lines |
| 45232141 |
Heating works |
Ancillary works for pipelines and cables |
| 45232142 |
Heat-transfer station construction work |
Ancillary works for pipelines and cables |
| 45231112 |
Installation of pipe system |
Construction work for pipelines, communication and power lines |
| 45350000 |
Mechanical installations |
Building installation work |
| 45231110 |
Pipelaying construction work |
Construction work for pipelines, communication and power lines |
| 45231111 |
Pipeline lifting and relaying |
Construction work for pipelines, communication and power lines |
| 45231113 |
Pipeline relaying works |
Construction work for pipelines, communication and power lines |
| 45330000 |
Plumbing and sanitary works |
Building installation work |
| 45232152 |
Pumping station construction work |
Ancillary works for pipelines and cables |