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产品描述

Jackpot 是一次性液压千斤顶,放在砧木支柱的顶部,然后通过止回阀用高压水进行膨胀。在 120 到 140 bar的压力下,它们轴向膨胀,并将矿山支柱加载到 20 吨到 50 吨,将支柱锁定到位,并对岩体施加压力。

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