45221247 - Tunnelling works

CPV code 45221247 in the EU Common Procurement Vocabulary refers to Tunnelling works. It sits at level 6 of the CPV hierarchy as a subcategory within the 45 division. This code is nested directly under 45221200, narrowing the broader category into the specific area of tunnelling works. As a leaf code, 45221247 has no further subdivisions and represents the most precise classification available in this branch — buyers should reference it directly in tender notices when the procurement primarily concerns tunnelling works. Contracting authorities across the EU use 45221247 in TED notices and national procurement portals to signal that a tender relates to tunnelling works.