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underground coal drill rod

System Description of Underground Mining Tunnel High Strength Rock Anchor Bolt 1 hollow core with continuous hotrolled outside thread 2 application as injection anchor without casing especially for nonstable boreholes 3 selfdrilling installation utilization of the anchor bar as drill rod with a singleuse drill...We serves many industries, including construction crushing: jaw crusher, sand making machine; Industrial milling: ultrafine grinding mill, Raymond mill; Ore beneficiation: ball mill, magnetic separator; Green building materials: rotary dryer, dust collector; Tails treatment: briquette machine.

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