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Ppws Strand

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PPWS consists of high intensity paralleled steel wires with its section being hexagon, and bound with high intensity polyester tape, then install two anchors on both sides of the strand. Comparing with the general steel wires, PPWS has the feature of high intensity and high flexibility modulus. It can be made into main strand for suspension bridge and be used in many large scale bridge projects.
PPWS generally consists of 61 to 127 steel wires and the following two specification products : 915,
1275 are used most widely in various of bridges.
Jiangsu Fasten Nippon-Steel Cable Co. Ltd., has the advanced technology of producing PPWS, installation and main strand protection on the basis of the self-own technology.
Technology of producing and installation of S shape main strand wrapping wires.
Dry Air Method for main strand. It has been successfully used in nearly ten bridges including Runyang Yangtze River Bridge.
Hot Casing Anchor matched with PPWS. Fatigue test(045 6 b upper limit, 200MPa stress amplitude) on it has been successfully made for 2 million times interiorly.
We are the first to finish the experiment of expanding the full-length strand which is 2625m long (The parameter of tested strands is completely in conformance with the design demands of Jiangsu Runyang Yangtze River Bridge) and gain satisfactory success.

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