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NORSOK Approval for OSTP Finland Oy Ab

Hans Storbacka, Senior R&D Manager, IWE in Jakobstad, Finland


We are extremely proud and pleased to announce that OSTP Finland Oy Ab has been listed on the Equinor’s official list of Approved Suppliers for production of longitudinally welded pipes according to NORSOK M650 in duplex grade EN 1.4462 (UNS S31803/2205).


This NORSOK approval is for welding line M10, with in-line annealing and in-line hydro testing and for Plasma Arc Welding (PAW) with added filler. It covers size range 6” - 14” and thickness range 2,77 – 5,97 mm with pipe lengths up to 12 meters.


Materials will be produced according to ASTM A928/928M-14 Class 3 in material grades UNS S32205, UNS S31803 and EN 1.4462, Outokumpu FORTA DX 2205.


Our success in this qualification can be attributed to our well developed in-line annealing process, which has helped us attain a very uniform pipe annealing condition, like also the trustworthy Outokumpu FORTA DX 2205 raw material and our experienced Notified Body approved welding and NDT operators.


However, the success of this project would not have been possible without the highly appreciated tight cooperation with our supporting partner as well as our experienced sales, production, QA and R&D key personnel and the Örnsköldsvik ISO/IEC 17025 accredited laboratory.


OSPT Group has now got both NORSOK approved duplex pipe and fitting production strengthening our offering platform to customers!  


Next step will be to get other duplex and high alloyed austenitic stainless steel grades NORSOK approved for welding line M10 through ongoing work during 2019.



mar 2019
As our business develops, we constantly need knowledgeable and motivated personnel, such as welding operators, metal workers, maintenance installers, electric automation installers, truck drivers, packers etc. You can fill in an open application where you can define what kind of job you are looking for.