How To Use Drill rod In A Sentence

• The results showed that there are good comprehensive mechanical properties in the geological drill rod welded by friction welding.
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• There were a lot of difficulties when the traditional fatigue lifespan assessment method is used in evaluating drill rod lifespan.
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• Equipped with hydraulic holder and hand powered unscrewer, to untighen the drill rod easily.
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• The results revealed that the non homogeneous distribution of the carbide caused the "zonal structure" appeared in the joint of drill rod which is hardened and high temperature tempered.
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• The results revealed that the non homogeneous distribution of the carbide caused the "zonal structure" appeared in the joint of drill rod which is hardened and high temperature tempered.
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