Coal mine drill bits for rock drill

    Coal bits are mainly used in coal and mine drilling, have dry-type & wet-type.

     

Description:

Dimension: 25, 27, 28, 29, 30, 32, 36, 42 mm.

Features: large torque, wide drilling range, easy connection and durable.

Parameter

Normal Thread Model: M16*2; M14*1.5, M12*1.75; M14*1.5; M12*1.75

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