Outburst prevention drill

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Brief Introduction 1.high quality 2.best price 3.easy to use Detail Introduction Outburst prevention drill 1. Effective outburst prevention drill pipe, and be used in the coal mine coal lane half coal rock gas pressure relief hole drain out of the job 2. Selects the high quality steel, drill steel body coating alloy cutter adopts imported brand, to ensure the strength and hardness of the drill bit 3. The main specifications are 44 mm 65 mm 65 mm 65 mm 150 mm, etc

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jining hengwang mining machinery co.ltd

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