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N Mark for steel pipes
stacked hollow steel tubes

N Mark for steel pipes

​​​​​​​​​​​The aim of the N Mark for steel pipes is to ensure compliance with the corresponding product standards in order to guarantee customer satisfaction

The objectives of the N Mark for steel tubes used for piping is to make it possible for companies to demonstrate compliance with Spanish or European standards, and with customer requirements

Longitudinally welded steel pipes for distribution networks and gas fuel reception facilities used with pressures that do not exceed 4 bar (average pressure)UNE 36864:1996
Non-alloy steel pipelines for water and other fluidsUNE-EN 10224:2003, UNE-EN 10224:2003/A1:2006
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As a compliance assessor, AENOR is a leading product certification entity. With over 100,000 certified references throughout more than 40 countries, the AENOR N Mark is among the top 5 product quality marks in the world. 

The AENOR N Mark is a voluntary marking that allows a company to demonstrate that its product complies with specific provisions compiled 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 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
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Public Administrations

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  • ​​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

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  • Confidence from knowing that the product has undergone prior verification
  • Credibility: the product is assessed by a renowned certification company ​ ​​

APPLICATION

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.

Conformity assessment activities will commence once AENOR experts have analysed the documents to check that the products comply with the applicable standards:

AUDIT/INSPECTION

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 for testing at the factory and to send to an accredited laboratory to perform the tests included in the standards.

TESTING

The laboratory performs the tests established by the standard and sends its report to AENOR.

GRANTING PROCEDURE​​

Using all the information on the activities performed, the Technical Certification Committee (independent body comprising 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. Conducts the auditing activities, inspection, sample taking and testing on a semi-annual or annual basis. The result is evaluated by the Technical Certification Committee who decides whether the AENOR certification is retained.

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

  • The AENOR product certificate
  • A licence to use AENOR's Mark of a certified product, in accordance with the provisions of AENOR regulations
AENOR N Mark logo for a certified product​​​​​