<![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 21809-4:2009]]> /cms/render/live/es/sites/isoorg/contents/data/standard/03/90/39074.html Normas y proyectos de Ïã¸ÛÁùºÏ²Ê¿ª½± Ïã¸ÛÁùºÏ²Ê¿ª½±.org 60 /modules/isoorg-template/img/iso/favicon/red/favicon1.ico http://www.iso.org/ <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 21809-4:2009]]> <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 21809-4:2009 - Petroleum and natural gas industries — External coatings for buried or submerged pipelines used in pipeline transportation systems — Part 4: Polyethylene coatings (2-layer PE)]]> /cms/render/live/es/sites/isoorg/contents/data/standard/03/90/39074.html /cms/render/live/es/sites/isoorg/contents/data/standard/03/90/39074.html 2022-04-08