BS EN 10225:2009 specifies requirements for weldable structural steels to be used in the fabrication of fixed offshore structures in the form of plates up to and including 150 mm thick. It also specifies sections up to 63 mm thick except for sections delivered in the as-rolled condition which are permitted up to 25 mm thick only. Seamless hollow sections up to and including 40 mm thick and high frequency electric resistance welded hollow sections up to and including 20 mm thick are specified. Greater thicknesses for sections and hollow sections may be agreed, provided the technical requirements of this European Standard are maintained.

For plates the thickness limitations are:

S355G2+N, S355G5+M, - up to and including 20 mm

S355G3+N, S355G6+M - up to and including 40 mm

S355G7+N, S355G8+N, S355G9+N, S355G10+N - up to and including 150 mm

S355G7+M, S355G8+M, S355G9+M, S355G10+M - up to and including 100 mm

S420G1+QT, S420G1+M, S420G2+QT, S420G2+M - up to and including 100 mm

S460G1+QT, S460G1+M, S460G2+QT, S460G2+M - up to and including 100 mm

BS EN 10225:2009 is applicable to steels for offshore structures, designed to operate in the offshore sector but not to steels supplied for the fabrication of subsea pipelines, risers, process equipment, process piping, and other utilities. It is primarily applicable to the North Sea Sector, but may also be applicable in other areas provided that due consideration is given to local conditions e.g. temperature.

In the case of hollow sections formed from plate with the seam fusion welded, BS EN 10225:2009 covers only the requirements of the plate material. Minimum yield strengths up to 460 MPa are specified together with low temperature impact properties at temperatures down to -40 C.

BS EN 10225:2009 applies to material supplied ex-mill or from merchant's stock.



Cross References:
EN 473
EN 571-1
EN 895
EN 1011-1
EN 10002-1
EN 10020:2000
EN 10021:2006
EN 10024
EN 10025-1
EN 10025-3
EN 10025-4
EN 10025-6
EN 10027-1
EN 10027-2
EN 10029
EN 10034
EN 10045-1
EN 10052:1993
EN 10055
EN 10056-2
EN 10067
EN 10079:2007
EN 10160
EN 10163-2
EN 10163-3
EN 10164
EN 10204
EN 10210-1
EN 10210-2
EN 10246-3
EN 10246-5
EN 10246-7
EN 10246-8
EN 10246-12
EN 10246-14
EN 10246-15
EN 10256
EN 10279
EN 10306
EN ISO 2566-1
ISO 2566-1:1984
EN ISO 4063
ISO 4063:1998
EN ISO 6507-1
ISO 6507-1:2005
EN ISO 6947
ISO 6947:1993
EN ISO 8492
ISO 8492:1998
EN ISO 9934-1
ISO 9934-1:2001
EN ISO 12737
ISO 12737:2005
EN ISO 14284:2002
ISO 14284:1996
EN ISO 15614-1
ISO 15614-1:2004
ISO 15614-1:2004/AMD 1:2008
BS 7363


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