1.Coal Cutter Bit Manufacturer 2.the head of tungsten carbide tip is sintered by vacuum 3.dry-type and wet-ty

coal cutter bit,coal mining cutter teeth,coal bits

The coal mine bits are mainly used in coal and mine drilling,have dry-type and wet-type

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

  

        

Coal Cutter Bit