A study was carried out on Zeron 100 (UNS S32760) super duplex stainless steel to determine the suitability of the alloy for utilisation for subsea flowline pipe applications which are installed by reeling. A spool piece was fabricated, to produce a number of girth welds. The spool piece was then subjected to a number of bending cycles which simulated the bending cycles encountered in the fabrication and reel laying of subsea pipelines. The bending radii of the formers were selected to produce strain in the spool piece consistent with that which would be encountered during production, fabrication and reel laying. Mechanical testing, corrosion testing and microstructure evaluation were undertaken on the spool piece both pre and post the simulated reeling cycle. The test results showed that after being subjected to the bending cycles the spool piece still retained acceptable mechanical properties and corrosion resistance.
An investigation into effects of reeling and straightening on the mechanical properties and corrosion resistance of Zeron 100 super duplex stainless steel for use in sub sea flowline applications
Untersuchung des Einflusses von Glätten und Richten auf die mechanischen Eigenschaften und die Korrosionsbeständigkeit des rostfreien Superduplexstahls Zeron 100 für untermeerisch verlegte Rohrleitungen
1995
6 Seiten, 3 Bilder, 2 Tabellen, 2 Quellen
Conference paper
English
Use of supermartensitic stainless steel pipe for offshore flowline applications
Tema Archive | 2006
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