ClassNK Approves Duplex Stainless Steel Tankers

Press Release
Wednesday, March 27, 2013

ClassNK announced  that it has approved the first application of duplex stainless steel (NSSC 2120) on vessels in Japan.

 

Tankers built by the Japanese shipyards Sasaki Shipbuilding Co., Ltd and Hakata Shipbuilding Co., Ltd were applied with the duplex stainless steel, which was manufactured by Nippon Steel & Sumikin Stainless Steel Corporation. The two domestic vessels, a chemical tanker and an oil tanker, were launched on January 17, 2013.


The cargo tanks for use in chemical tankers built in Japan are generally constructed with austenitic stainless steel SUS304. However, with a nickel content about one quarter of that of SUS304, the newly approved austenitic-ferrite two-phased stainless NSSC2120 can now also be applied to chemical tankers as a substitute for SUS304 for first time in Japan.


Pitting corrosion resistance to sea water and corrosion resistance to acids of NSSC2120 are equal to or greater than those of SUS304. In terms of strength, NSSC2120 is almost twice as strong as SUS304 at 0.2% proof stress under NK Rules. Furthermore, NSSC2120 has weldability equivalent to that of SUS304 when CO2 gas shielded arc welding or submerged arc welding is applied.

Maritime Reporter November 2013 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

New Products

ClassNK Registered Al Kout Delivered to KOTC

Leading classification society ClassNK announced that it has completed work on the 165,178GT VLCC Al Kout, built by Daewoo Shipbuilding & Marine Engineering Co.

New Functionality in WatchMate Vision

Vesper Marine has announced updates to its WatchMate Vision and XB-8000 product lines.   Now, in addition to transmitting and receiving position, course, speed

Fukushima Offshore Floating Wind Farm Update

A consortium has been participating in an experimental offshore floating wind farm project sponsored by the Ministry of Economy, Trade and Industry since March 2012.

Shipbuilding

ClassNK Registered Al Kout Delivered to KOTC

Leading classification society ClassNK announced that it has completed work on the 165,178GT VLCC Al Kout, built by Daewoo Shipbuilding & Marine Engineering Co.

Royal IHC Bags Dredging Package Order

Royal IHC (IHC) has secured a new contract with the Chinese shipyard, Jin Hai Heavy Industrial Group, for the delivery of a dredging installation package for a trailing suction hopper dredger.

Equinox Class Scrubber Systems Receive Certification

Algoma Central Corporation (“Algoma”), the largest Canadian shipowner and operator of domestic Great Lakes vessels announces that it has received all requisite

Tanker Trends

ClassNK Registered Al Kout Delivered to KOTC

Leading classification society ClassNK announced that it has completed work on the 165,178GT VLCC Al Kout, built by Daewoo Shipbuilding & Marine Engineering Co.

DNV GL Approvals for SAACKE Scrubbers

Classification increases planning certainty for exhaust gas scrubber operators.   The classification society DNV GL has certified the SAACKE exhaust gas scrubber

China to Import 335 MT of Naphtha, Wants More

China is set to import more than 335,000 tonnes of naphtha and diesel, rare moves for the world's no. 2 oil consumer given it has been self-sufficient at meeting domestic oil product demand,

Vessels

Tugboat Crew Missing After Collision

Five members of a tugboat crew are missing after a collision with a merchant ship about 9NM off Tanjung Gelang yesterday (30 October). One crew member was rescued by fishermen.

ClassNK Registered Al Kout Delivered to KOTC

Leading classification society ClassNK announced that it has completed work on the 165,178GT VLCC Al Kout, built by Daewoo Shipbuilding & Marine Engineering Co.

Royal IHC Bags Dredging Package Order

Royal IHC (IHC) has secured a new contract with the Chinese shipyard, Jin Hai Heavy Industrial Group, for the delivery of a dredging installation package for a trailing suction hopper dredger.

 
 
Maritime Contracts Maritime Security Maritime Standards Naval Architecture Navigation Pipelines Port Authority Salvage Ship Repair Sonar
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1196 sec (8 req/sec)