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N Mark for plastic pipes and accessories for water supply and irrigation
  N Mark of quality for plastic tubes and accessories for water supply and irrigation (PVC, PVC-O, Polyethylene PE, Pol

N Mark for plastic pipes and accessories for water supply and irrigation

The N Mark for plastic pipes and accessories for water supply and irrigation (PVC, PVC-O, Polyethylene PE, Polyester Fibreglass) certifies that these products comply with national and European standards.

An AENOR product certification is an essential instrument to enhance product quality. It gives customers more confidence in the products they acquire, while also facilitating product sales and introduction to new markets.

The N Mark covers the following products:

  • Polyethylene pipes (PE) for water supply, drainage and sewerage under pressure in accordance with the standard UNE-EN 12201-2
  • Low-density polyethylene tubes density for micro-irrigation branch lines in accordance with the standard UNE 53367
  • Polyethylene tube unions with mechanical accessories for pressurised fluid supply in accordance with the standard UNE-EN 12201-5
  • Polyethylene compound for water supply applications in accordance with the standard UNE-EN 12201-1
  • Unplasticised poly(vinyl chloride) pipes for pressurised water supply in accordance with the standard UNE-EN-ISO 1452-2
  • Unplasticised poly(vinyl chloride) accessories for pressurised water supply in accordance with the standard UNE-EN-ISO 1452-3
  • Oriented poly(vinyl chloride) pipes (PVC-O) for water conveyance systems in accordance with the standard UNE ISO 16422
  • Unsaturated polyester (UP) pipes reinforced with fibreglass (PRFV) for pressurised and non-pressurised applications in accordance with the standards UNE-EN 14364 and UNE-EN 1796

As a compliance assessor, AENOR is a leading product certification entity. With more than 100,000 certified references, the AENOR N Mark, used in over 40 countries, is one of the 5 most widely-accepted quality marks in the world.

AENOR's N Mark is voluntary and enables companies to demonstrate that their products comply with the service provision requirements of UNE, EN and ISO standards or technical specifications. This demonstration of compliance during the manufacturing and testing of the final products, based on a rigorous control performed by AENOR, will allow licensees of the Mark to put their products on the market with a high standard of quality, instilling confidence in the users of these certified products.

This way, the AENOR N Mark can provide the following advantages:

The manufacturer

  • Affords greater knowledge of the product via the exhaustive control set forth by the N​ Mark
  • Products that do not comply with relevant standards or regulations can be detected before they enter the market
  • Lowers the production costs since there is greater control during the manufacturing process.
  • There are commercial grounds to introduce the product into new markets and facilitate access to works

Business providers and monitoring agents

  • Guarantees that the product has undergone prior verification to determine its compliance with minimum requirements
  • Products with long-lasting confidence. Product assessments are ongoing, guaranteeing compliance with the initial certified provisions
​ ​

Public Administrations

  • ​​Guarantees that the prescribed product will comply with the applicable statutory requirements
  • Transparency of the AENOR certification process.
  • Strikes a balance among interested parties with regard to decisions on the certified products

The end user

  • Confidence from knowing that the product has undergone prior verification
  • Credibility, the product is assessed by a recognised certification body​


The AENOR Mark is voluntary. Companies that want AENOR to certify their product must submit their application in accordance with the formats established by AENOR. This application must include information about the company and the characteristics of the products for which certification is sought.

Once AENOR technical staff have analysed the documents, compliance assessment activities will be performed in order to verify that the products comply with the applicable standards:


A visit is made to the production centre to carry out the following procedures:

  • a) the quality management system is audited in accordance with the UNE-EN ISO 9001 requirements that are directly related to the production process.
  • b) The manufacturer's manufacturing process and production controls are inspected to ensure the product complies with the requirements of the standard.
  • c) Samples are taken and sent to an accredited laboratory, which performs the tests included in the standards. The manufacturer sends samples identified by the auditor to the laboratory.


The laboratory carries out the tests of the standard and send a report to AENOR.


Using all the information on the activities performed, the Plastics Certification Technical Committee (an independent body established by all the interested parties: manufacturers, the Administration, users, monitoring entities and AENOR) will either propose to AENOR that the Mark be granted, or request that one of the activities be repeated due to non-compliance.

Once the Certificate has been granted, the process will continue as the monitoring activities required to keep it must be performed. Samples will be taken, and audits, inspections and tests will be performed on an annual basis. The result is assessed every year by the Plastics Certification Technical Committee, which decides whether or not to uphold the Mark

Once the organisation passes the certification process, it obtains: ​

  • The AENOR product certificate
  • A licence to use AENOR's Mark of certified products
AENOR N Mark logo for a certified product  

Certification of plastics

CTC Committee 001 for Certified Plastic

​The AENOR Mark it is a guarantee of quality for plastic products

GlobalEPD Declarations

Environmental product declarations (EPD)

​​​​AENOR manages the GlobalEPD Programme of verification, in accordance with Standards ISO 14025 and ​EN 15804