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Place of Origin
HS-CODE
25-
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Detailed Description
Outburst prevention drill
Effective outburst prevention drill pipe, and be used in the coal mine coal lane, half of the coal and rock water, ground put gas, pressure relief hole operations. Selects the high quality steel, drill steel body coating alloy cutter adopts imported brand, to ensure the strength and hardness of the drill bit.
The main specifications are Φ 44 mm, Φ65 mm, Φ76 mm , Φ113 mm, Φ150 mm , etc
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