OREANDA-NEWS. Vyksa Steel Works (JSC VSW, Nizhny Novgorod region, a part of United Metallurgical Company, CJSC OMK) has confirmed that the large-diameter pipes produced from its own sheets are in accordance with the specifications for the Nord Stream Extension (NEXT) project and the requirements of DNV-OS-F101 “Submarine Pipeline Systems” maritime standard of the Norwegian company Det Norske Veritas.

The DNV certificate allows the company to use wide plates made from 485FD (X70) steel manufactured at the Heavy Plate Mill 5000 of VSW to produce pipes with an inner nominal diameter of 1,153 mm and a wall thickness of 30.9 and 34.6 mm for the third and fourth strings of the Nord Stream pipeline. A test batch of plate and pipes made from it was produced at VSW in front of representatives of DNV and Nord Stream AG in the middle of 2013.

In 2007, VSW became the first producer of pipes in Russia and the CIS countries that was certified to be in concordance with the DNV-OS-F101 standard for submarine pipeline systems. The DNV certificate allowed the company to be the only domestic producer to participate in the tender and the delivery of pipes for the first and second strings of the sub-water division of the Nord Stream main pipeline. From 2008 to 2011, VSW produced and delivered over 460,000 tons of LDPs (about 500 km) for the project.