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Drilling Rig
Usage
250×250 Kelly bar is the driving drilling pipe special for big holes drilling. can used for the circulation and reverse circulation drilling, also can achieve gas inlet and deslagging, this kelly bar can withstand big torque and deslagging is good.
Specification
Copyright：Shijiazhuang Coal Mining Machinery Co., Ltd. ICP:09037270
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http://www.sjznet.net
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