Tungsten Carbide Drag Drill Bit for Rock Drilling
Product Description:
Drag bit are manufactured from forged high-quality alloy steel and
hard alloy, plus state of art welding technology and multiple
precision heat treatment to provide the highest penetration rate
and longest lifespan at the roughest condition.
A drag bit is usually designed for soft formations such as sand,
clay or some soft rock. However, they will not work well in coarse
gravel or hard rock formations. Uses include drilling water wells,
mining, geothermal, environmental and exploration drilling.
Whenever possible, they should be used to drill pilot holes because
they produce cuttings that are easiest to log.
Three-wing bits tend to drill faster, whereas four-wing bits are
longer-lasting, more durable, and drill a straighter hole.
The Advantage of Drag Bit
The blade system allows you to replace worn or damaged individual
blades rather than the entire bit. The cost of purchasing multiple
blade types and sizes is much lower than the unit. Prepare a
variety of blades to ensure your time on site is most effective.
The drag bit is suitable for the formation with low hardness and
high plasticity.
From 3 7/8" three-step bits to 6 1/4" four-step bits to the various
sized chevron bits, this replaceable blade system offers
high-quality carbide-tipped wings that weld onto your pipe or
threads are cost-effective and versatile.
Our also produces and sells various drill bits for oil fields,
mines, geological surveys, hydrology exploration, engineering
piling, geothermal development, Wells and other applications. At
the same time, we will provide specific solutions according to
customer requirements and actual drilling conditions
Specifications:
| Drag Bit Specification |
| Size of Drag Bit(inch) | 17 1/2 | Connection(inch) | 7 5/8 |
| Blades Qty | 8 | Drag Type | Steped/Concave-convex |
| Nozzles Qty | 8 | Core Type | Coring/Non-coring |
| Side Cutters | With/Not | Cutters Size(mm) | 13mm 16mm |
| Applicable Formation Hardness | 0<F<10 | No Cutters |
| 10<F<12 | With Normal Side cutters |
| 12<F<18 | With Convex Side cutters |
| According to your requirements choosing the proper bits. |
