应用行业
tunneling, mining,quarrying
Color
Green,blue,golden etc
Material
Alloy steel bar and tungsten carbide bit
Thread type
R25,R28,R32,R38,T38,T45,T51,ST58,ST68
Button bit shape
Spherical, Ballistic,Conical
Face shape
Flat shape and Drop-center shape
Use
Well drilling,mining drilling,ore drilling