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41/2"分级箍组装完备准备喷漆发往吐哈

[2011/7/19] Hits:1829

41/2"分级箍打开17MPA,关闭5MPA,最大通经100毫米,采用可钻并易钻材质铝锰合金.此次41/2分级箍的使用,解决了侧钻井及修井作业易漏失的难题.

 

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