China R22,R25,R28,R32,R35,R38,T38,T45,T51,GT60 threaded button drill bits are made by high quality alloy steel bar and tungsten carbides. Through heat treatment, our drilling tools are tough enough to meet rock drilling demands and have least loss of energy while drilling the rocks. Besides, we can design customized thread button drill bits according to different drilling application, and custom drill bits are applicable to drill soft rock, loose-medium rock and hard rock. Main button bits diameters: R32 thread button bits: R32-45mm, R32-51, R32-64, R32-76, T38 thread button bits: T38-64mm, T38-76mm, T38-89, T38-102mm, T45 thread button bits: T45-76mm, T45-89mm, T45-102mm, T51 thread button bits: T51-89mm, T51-102mm, T51-127 etc
Material: Alloy steel bar and tungsten carbide
Button shape: Spherical, Hemi-spherical, Ballistic
Face design: Drop center face, Flat face
Skirt: Standard, Retrac
Button bit diameter: 38mm to 152mm
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