Tensioning jack, oil gauge shall be checked and calibrated prior to the prestressed steel strands tensioning and executed to check and calibrate in using as per the specified procedure.

张拉千斤顶、油表在预应力钢束张拉前进行检验和标定，使用中按规定程序进行送检标定。

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Tensioning jack, oil gauge shall be checked and calibrated prior to the prestressed steel strands tensioning and executed to check and calibrate in using as per the specified procedure.

张拉千斤顶、油表在预应力钢束张拉前进行检验和标定，使用中按规定程序进行送检标定。

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