Corrosion resistant steel strand for prestressed concrete

(11) EP 2 650 431 A3

(22) 14.06.2012

(43) 16.10.2013

(71) Kurosawa Construction Co., Ltd. Tokyo 182-0003 (JP)

(84) AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO
PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME

(57) Double rustproof PC strand comprising a core wire (8) and six surrounding wires (9) twisted around said core wire (8), the wires having the following diameters:

(A) diameter of the core wire (8): 4.42 +/- 0.05 mm, diameter of the surrounding wire (9): 4.25 +/- 0.05 mm; or

(B) diameter of the core wire(8): 5.22 +/- 0.05 mm, diameter of...

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