F51 and F53 Duplex Stainless Steel products are qualified by NORSOK standard.


This month, we have obtained NORSOK(*) qualifications of F51 (22Cr) and F53 (25Cr) Duplex Stainless Steel (DSS) products manufactured by open die forging or forged bar process.

DSS forgings are mainly applied to offshore oil and gas plants thanks to their excellent corrosion resistance and high strength.

Since we have already obtained some NORSOK qualifications for DDS products, our capability to supply them can be expanded by these additional qualifications. Our current menu for DSS products according to NORSOK is shown below.

(*) NORSOK: A standard introduced by the Norwegian oil industry in the 1990s.