NF ISO 21809-4

February 2026

Standard Current

Oil and gas industries including lower carbon energy - External coatings for buried or submerged pipelines used in pipeline transportation systems - Part 4: Polyethylene coatings (2-layer PE)

New: UPSELL service

Main informations

Collections

National standards and national normative documents

Publication date

February 2026

Number of pages

79 p.

Reference

NF ISO 21809-4

ICS Codes

75.200 Petroleum products and natural gas handling equipment

International kinship

ISO 21809-4:2026

New: UPSELL service

- The UPSELL service allows you to easily update one of your standards.
- With a single click, add a new language, the Requirements or Redline+ service and add one or more additional users.
- Whether you are in the process of acquiring a standard or it is already available in your personal space, the UPSELL service is available at every stage to help you understand it and implement it within your organization.

Need to identify, monitor and decipher standards?

COBAZ is the simple and effective solution to meet the normative needs related to your activity, in France and abroad.

Available by subscription, CObaz is THE modular solution to compose according to your needs today and tomorrow. Quickly discover CObaz!

Request your free, no-obligation live demo

I discover COBAZ