Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Reexamination Certificate
2011-04-12
2011-04-12
La Villa, Michael (Department: 1784)
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
C428S685000, C428S034100, C428S686000, C138S118000, C138S118100, C138S124000, C138S129000, C138S134000, C138S137000, C138S139000, C137S799000, C156S184000, C156S428000
Reexamination Certificate
active
07923126
ABSTRACT:
The invention relates to a use of a duplex steel for the production of an armouring layer of a flexible pipe comprising at least one unbonded armouring layer and at least one unbonded sealing layer wherein the duplex steel comprises in weight percent0.01-0.05% by weight of carbon (C)at least 0.15% by weight of nitrogen (N)20.0-23.0% by weight of chromium (Cr)up to 3.0% by weight of nickel (Ni)up to 1.0% by weight of molybdenum (Mo)3-6% by weight of manganese (Mn)up to 1.0% by weight of copper (Cu)incidental impurities andbalance being iron (Fe).
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La Villa Michael
NKT Flexibles I/S
Pearne & Gordon LLP
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