UR W - Materials and Welding

UR W20 Deleted

Higher strength hull structural steels with a minimum yield strength of 390 N/mm2 - superseded by W11, - Deleted 1995 

UR W21 Deleted

Hull structural steels for low temperature application - superseded by W11, - Deleted 1995 

UR W22 Offshore mooring chain - Rev.6 June 2016

UR W23 Approval of welding consumables for high strength quenched and tempered steels for welded structures - Rev.1 1997

Note: UR W23 Rev2 will come into force on 1 July 2019 and can be found in "Revision History" 

UR W24 Rev3 Corr1 CLN

UR W24 Cast copper alloy propellers - Rev. 3 Corr.1 Jan 2013

Aluminium alloys for hull construction and marine structure - Rev.5 June 2014

UR W26 Rev1 CLN

UR W26 Requirements for welding consumables for aluminium alloys - Rev.1 June 2005

UR W27 Rev1 CLN

UR W27 Cast steel propellers - Rev.1 May 2004

UR W28 Welding procedure qualification tests of steels for hull construction and marine structures - Rev.2 Mar 2012

UR W29 New

UR W29 Requirements for manufacture of anchors - June 2005

UR W30 Normal and higher strength corrosion resistant steels for cargo oil tanks - Del 1 July 2015

UR W31 Application of YP47 steel plates - Rev.1 Sept 2015

UR W32 Qualification scheme for welders of hull structural steels - Sept 2016

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