Active Member
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[China]
Address: Room 1407,BuildingA,No.13,Beiyuan Road,Chaoyang District,Beijing,China
Contact name:Jack Cheng
Beijing Jincheng Mining Technology Co., Ltd. |
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6 Inch Drag Drill Bit Wide Range Drilling Standard Drilling Tools 150mm - 445mm
Application
Drag bits have a wide range of drilling applications including environmental, exploration, geothermal, water well, road construction, and natural gas and oilfield drilling.
The best application for drag bits is in softer, unconsolidated formations like clays, shale, sands, and soft limestone.
The most common styles are either step type or chevron type bits.
Other than PDC bits, Drag Bits have the lowest cost per bit. Drag bits are a rotary drill bit built with a steel body and tungsten carbide teeth. These bits will out preform other more expensive bits if used appropriately. Drag bits are extremely popular choice for seismic drilling, blast hole drilling and geothermal drilling applications. For best results adjust the rotational speed to 50% less than what you would normally use for a tricone bit of the same size and reduce the weight on bit by the same amount.
3 wing, 4 wing, or Step?
We've created the following table to help you decide which type of
drag bit is needed for your application.
Simply put, 4 wing bits are the most durable BUT have the lowest
ROP. When making a decision on which drag bit to buy, however,
don't purchase a 3 wing or step just to be able to drill faster.
Always remember that damaged carbide cutters slow penetration rate
Characteristics
1, A solid one piece heat treated, 4140 alloy steel body for bit
strength & durability;
2, CNC threaded machining for proper installation &use;
3, Forgings are milled to better seat the carbide inserts.
4, Select tungsten carbide inserts 5.5mm thick are standard.
5, Relief is hand ground behind carbide inserts for maximum
performance.
Specification
| Type | Suitable formation | Diamter |
| 2 wings air flush step drag bit | Medium to Soft | 95.3mm(3 3/4 inch) |
| 3 wings air flush step drag bit | Medium to Soft | 95.3mm(3 3/4 inch) |
| 3 wings air flush chevron drag bit | Medium to hard | 95.3mm(3 3/4 inch) |
| 3 wings full flush step drag bit | Medium to Soft | 95.3mm(3 3/4 inch) |
| 3 wings step drag bit | Medium to hard | 50.8 to 444.5mm2 to 17 1/2 inch) |
| 3 wings chevron drag bit | Medium to hard | 63.5 to 304.8mm(2 1/2 to 12 inch) |
| 4 wings step drag bit | Medium to Soft | 165.1 to 444.5mm(6 1/2 to 17 1/2 inch) |
| 4 wings chevron drag bit | Medium to hard | 165.1 to 304.8mm(6 1/2 to 12 inch) |
| Claw bit | Fast penetration | |
Thread size: 2 3/8'' API Reg, 2 7/8'' API Reg, 3 1/2'' API Reg, 4 1/2'' API Reg, 6 5/8'' API Reg, 2'' API IF, 2 3/8'' API IF, 2 7/8'' API IF, A Rod, N Rod, AW, BW, NW, AWJ, BWJ, NWJ. | ||
Packing& Delivery
FAQ
1. Shipping time for an order
We have many stock. As usual, we can delivery the goods as soon as
we get the full payment.
2. Quality Control
Strict inspection and testing for every order before shipping out .
3. How can we trust your company?
We support Alibaba trade insurance. Protect products quality,
shipment on time and your covered amount.
4. After Sales Service
Free replacement will provide once the failure confirmed caused by
our product quality.
