Prestressed steel strand
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Prestressed steel strand
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Prestressed steel strand
The order of steel strand tensioning must strictly follow the symmetrical tensioning requirements specified in the design document.
Steel strand tensioning is double-controlled, primarily by stress control and secondarily by strain verification. When the target initial stress is reached, mark the elongation on the tensioning end of the steel strand. Then, supply oil to the jack and tension it in stages to the over-tensioning stress, holding the load. 5min Then slowly return the oil to the controlled tensioning stress. At this time, open the top pressure valve to return the oil, and the top pressure piston passively returns. Tighten the clamping plate, and the tensioning anchoring is complete. The elongation of each stage of the jack should not exceed... 18cm。
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specializing in the production of various specifications of prestressed concrete with steel strand, prestressed steel wire, unbonded prestressed steel strand and so on...
Tianjin Longheng Prestressed Steel Strand Co., Ltd.
After-sales hotline:022-68603799
Email: tjlhyyl@163.com
Headquarters address:North 301600 of Beihua Road, Jinghai Development Zone, Tianjin
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