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N Mark for plastic piping systems for drainage and sewerage
N Mark of quality for plastic pipe systems for drainage and outlets (PVC, PP) with special characteristics

N Mark for plastic piping systems for drainage and sewerage

The N Mark for plastic piping systems for drainage and sewerage (PVC, PP) with special fire reaction and noise reduction features certifies the compliance of these products with national and European standards

AENOR product certification is an essential tool for increasing product quality. It provides the consumer with greater confidence in the product, improves sales and facilitates insertion into new markets

The N Mark covers the following products:

  • Unplasticised poly (vinyl chloride) pipes, for draining waste water (at low or high temperature) inside the structure of a building, in accordance with the standard (UNE-EN 1329-1)

  • Accessories injected with unplasticised PVC to drain rain water and waste water, in accordance with standard <(UNE-EN 1329-1)

  • Unplasticised poly (vinyl chloride) pipes, in a structured wall, for draining rain water and waste water inside buildings, in accordance with the standard (UNE-EN 1453-1)

  • Polypropylene pipes (PP) to drain waste water (at low or high temperature) inside the structure of a building, in accordance with the standard (UNE-EN 1451-1)

  • Polypropylene accessories (PP) to drain waste water (at low or high temperature) inside the structure of a building, in accordance with the standard (UNE-EN 1451-1)

The following standards are also considered:

  • Fire performance for unplasticised PVC (PVC-U) pipes and accessories and/or polypropylene (PP) to drain rain water and waste water in accordance with the standard (UNE-EN 13501-1)

  • Noise behaviour of pipes and/or accessories made with PVC, structured wall PVC and/or polypropylene to drain waste water, in accordance with the standard (UNE-EN 14366)

As a compliance assessor, AENOR is a leading product certification entity. The N Mark has been used to certify more than 100,000 products in more than 40 countries and is one of the world's five most widely used product quality marks.

The AENOR N Mark is a voluntary mark that allows the company to demonstrate that their product meets certain provisions established in a UNE, EN or ISO standard, or in a technical specification. 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 provides 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 company​


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 according to the requirements of UNE-EN ISO 9001 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 performs the tests established by the standard and sends its 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 certification process has been successfully completed, the organisation obtains: ​ ​

  • AENOR product certificate
  • User licence for the AEN​​OR ​Mark of a certified product, in accordance with the provisions of AENOR regulations
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