45253400 - Construction work for petrochemical plant

CPV code 45253400 in the EU Common Procurement Vocabulary refers to Construction work for petrochemical plant. It sits at level 5 of the CPV hierarchy as a subcategory within the 45 division. This code is nested directly under 45253000, narrowing the broader category into the specific area of construction work for petrochemical plant. As a leaf code, 45253400 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 construction work for petrochemical plant. Contracting authorities across the EU use 45253400 in TED notices and national procurement portals to signal that a tender relates to construction work for petrochemical plant.