GT60 Diameter 140mm Retract Button Bit for Blast Hole Drilling

Product Description

Retrac button bits are mainly used in loose rock mass with relatively broken rock. The retrac skirt design can assist in retrieving the drill tool, reduce the phenomenon of bit stuck and buried, and help improve the straightness of the borehole.

The thread button bits are made by high quality alloy steel bar and famous brand tungsten carbide,quality standard same as global brand such as Sandvik and Robit etc.
The thread type includes R25,R28,R32,SR35,R38,T45,T51, ST58, GT60, ST68 and so on.
The drill bit head diameters range from 33mm to 160mm.
The buttons have different shapes,such as spherical,ballisticand conical.
The face shapes include flat shape,drop-center shapes and engrave shapes,the body shapes have normal and retrac shapes.
The threaded drill bit is widely used in tunnel construction, large scale mining, such as open-pit and underground copper,gold etc mining.

Before Official Order, please confirm below informations:

(1) Thread Type

(2) Standard or Retrac

(3) Bit button shape (tip shape)--Spherical or Ballistic

(4) Bit face shape--Drop Center, Flat Face, Convex, Concave, etc...

Specification

OEM: In addition, 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.