CPV: 71500000 Construction-related services, 45000000 Construction work, 45100000 Site preparation work, 45111290 Primary works for services, 45230000 Construction work for pipelines, communication and power lines, for highways, roads, airfields and railways; flatwork, 45231000 Construction work for pipelines, communication and power lines, 45231100 General construction work for pipelines, 45231110 Pipelaying construction work, 45231300 Construction work for water and sewage pipelines, 45232000 Ancillary works for pipelines and cables, 45232100 Ancillary works for water pipelines, 45232121 Irrigation piping construction work, 45232130 Storm-water piping construction work, 45232140 District-heating mains construction work, 45232142 Heat-transfer station construction work, 45232423 Sewage pumping stations construction work, 45232424 Sewage outfall construction work, 45232440 Construction work for sewage pipes, 45232450 Drainage construction works, 45232453 Drains construction work, 45233100 Construction work for highways, roads, 45233300 Foundation work for highways, roads, streets and footpaths, 45233310 Foundation work for highways, 45233320 Foundation work for roads, 45233330 Foundation work for streets, 45233340 Foundation work for footpaths