6'' 152mm thread 3 1/2'' API REG 3 Wings Step Drag Bits For Soft Rock Drilling
The drag bit is the earliest type of drill used in rotary drilling. The drag bit has a simple structure. On the elliptical cylindrical housing with internal thread, a lateral working blade is welded, and the blade is welded with a sheet-like carbide cutting. With the blade warning, the surface of the working surface is welded with a flaky, cylindrical carbide cutting tool and a granular cemented carbide.
Drilling method: Spiral drilling, suitable for soft formations such as clay, sand, clay, etc. The drilling bit of the drag bit is fast and the comprehensive benefit is high.
Number & shape of cutting blades/stones
Size and location of the water courses
Metallurgy of the bit and cutting elements
3 wings drag bits
Drag Bit Size(Inch)
1 7/8"(47MM)~17 1/2"(444.5MM)
Drag Bit Connection
2 3/8"~6 5/8" API reg pin
Dril rods dia.
76mm, 89mm, 114mm, etc
Drag Bit Formation
soft ,medium soft ,hard,medium hard,very hard formation
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