ASK & ANSWER FOR Taurus INDUSTRIAL CO.,LTD http://www.flangeun.com/faq/tags/raised-face-flange.html 2013-12-12T03:28:11+00:00 Joomla! - Open Source Content Management What is an RFSO or SORF flange? 2013-04-07T14:06:10+00:00 2013-04-07T14:06:10+00:00 http://www.flangeun.com/faq/what-is-an-rfso-or-sorf-flange.html Aron DAI An RFSO / SORF flange is a raised face slip on flange. [img]http://Flangeun.com/images/flange/draft-b16.5-sorf.jpg[/img] An RFSO / SORF flange is a raised face slip on flange. [img]http://Flangeun.com/images/flange/draft-b16.5-sorf.jpg[/img]