Coal Mining Drill Bit

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

Dimension: 25, 27, 28, 29, 30, 32, 36, 42 mm.
Normal Thread Model: M16*2; M14*1.5, M12*1.75; M14*1.5; M12*1.75

Our products advantage

A. Selected higher quality diamond powder, improved the sintering technique, enhanced the bond combination strength between diamond grain

B.Improved the inner structure of the sintered cavity, the pressure and temperature become more balance, which ensure the cutter has more stable performance

C.Adopted a new type of carbide, which improved the weld strength

D.Optimized the designation of joint face, which reduced the residual stress