2 - 7/8' Drill Rod
2 - 7/8' Drill Rod. Introduction . Tapered drill rods is mainly used in the drilling blasting hole, guardrail hole, mountain reinforcment, anchoring and other engineering holes in mines, quarris, high ways, railways and so on.It has a long service life.and the y're also subjected to high bending stress,transferring the percussion energy from rock drill to drilling bit and then into the rock.
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