CPV code 45232100 designates Ancillary works for water pipelines in the Common Procurement Vocabulary (CPV 2008), the EU classification used to describe the subject of public contracts.
45232100 sits under 45232000 (Ancillary works for pipelines and cables) and groups 4 more specific sub-codes. When classifying a tender, choose the narrowest code that still covers the full subject of the contract.