Offshore and deep offshore applications are coming more and more demanding regarding number offunctionalities and water depth for umbilicals and especially regarding tubing. Oriented to new resources,the future developments (i.e. ultra deep offshore or abrupt margins) will be more difficult to operateleading to more and more stringent requirements for tubes. Thanks to its high mechanical properties andappropriate corrosion performances, super duplex stainless steel (SDSS) grade 2507 is already commonlyadopted by main players of the O&G industry for a wide range of conditions. With a strong collaborationwith one of the Majors, an innovative SDSS seam welded tube solution has been developed, exceedingthe standards characteristics and opening new perspectives.An extensive program of qualification, here presented, has been built in collaboration between OilCompanies, Umbilical manufacturers and the tube supplier, to confirm the expected potentialities of theproduct. Based on more than 11000 results, this paper is presenting the performance of the product interms of mechanical and corrosion properties. The associated innovative and robust process, heredescribed, is able to guarantee tight manufacturing tolerances combined with a high quality level, offeringattractive potential cost savings.
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