<![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 8773:1991]]> /cms/render/live/en/sites/isoorg/contents/data/standard/01/61/16188.html Ïã¸ÛÁùºÏ²Ê¿ª½± standards and projects Ïã¸ÛÁùºÏ²Ê¿ª½±.org 60 /modules/isoorg-template/img/iso/favicon/red/favicon1.ico http://www.iso.org/ <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 8773:1991]]> <![CDATA[Ïã¸ÛÁùºÏ²Ê¿ª½± 8773:1991 - Polypropylene (PP) pipes and fittings for buried drainage and sewerage systems — Specifications]]> /cms/render/live/en/sites/isoorg/contents/data/standard/01/61/16188.html /cms/render/live/en/sites/isoorg/contents/data/standard/01/61/16188.html 2006-09-12