Duplex Steels News

To curb global marine and air pollution, stricter limits on the sulphur dioxide content of marine exhaust gases stipulated by the EU and IMO (International Maritime Organization of the UN) will apply from 2020. From an engineering point of view, this can be achieved by using natural gas or fuels with a low sulphur content, and by cleaning the exhaust gases with a scrubber.For on-board exhaust gas cleaning systems KSB ITUR Spain S.A., a KSB Group company of located in Zarautz,…

The world's first chemical tanker to use a combination of duplex stainless steel and stainless clad steel in the construction of its cargo tanks was delivered to Oita-based Hiro Naviera S.A. November 15, 2014 by Usuki Shipyard Co., Ltd., Japanese classification society ClassNK reported. The 12,500MT chemical tanker Sunrise Hope, owned by Hiro Naviera S.A., will be operated by Nippon Marine Co., Ltd. The eco-ship design vessel is equipped with 14 cargo tanks, all which employ duplex stainless steel technology.

Classification society ClassNK (Chairman and President: Noboru Ueda) announced that it has released new Guidelines on the Welding of Duplex Stainless Steels. The guidelines have been developed to help shipyards safely and effectively make use of new duplex steels that are increasingly being used in the construction of cargo tanks for chemical carriers. As part of its work to support the safe construction of ships, ClassNK has released the guidelines for free via its website. Duplex stainless steel has a two-phase microstructure containing grains of both ferritic and austenitic phase…

Launch of  new Tube and Pipe weld purge systems for Shipbuilding and Shiprepair industries. Having been manufacturing Tube and Pipe Weld Purging Systems since 1975 Huntingdon Fusion Techniques (HFT) has now reached the MKV version of its designs by launching the new PurgElite series of Tube and Pipe Purging systems for diameters from 1” to 12” diameter inclusive. This particular range is especially suitable for the Stainless Steels, Duplex Steels and Nickel alloys that are being used in the manufacture of much of ships’ piping systems today.