Wire
Prestressing wire is a single stress relieved cold drawn high tensile steel wire, either plain or indented which has been straightened and stress relieved and then supplied in the form of coils or bundles of cut lengths.


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Ply-wire
2 or 3 wires helically wound to form a single element. The Ply wire strand shall consist of two or three wires of the same nominal diameter, spun together in helical form over a theoretical common axis with a lay length of 14 to 22 times the no

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Strand
The strand shall include a straight central wire, called a core or King wire around which six wires are spun in one layer. The outer wires shall be tightly spun around the central wire with a lay length between 14 and 18 times the nominal strand


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