F251/M221 Drill bit - F251/M221

1. F251/M221 Drill bit can improve drilling speed, 2.suitable for soft to medium hard formation, used to rotary motor drilling. - more info check here: //www.buyindustrialtools.com/F251-M221-Drill-bit-10163747/

Quick Brief

Place of Origin: Hebei China (Mainland) Brand Name: FEIDA Model Number: F251/M221 Type: Other Material: Other Use: Other PDC bit: Golden color

Product Features:

1. F251/M221 Drill bit can improve drilling speed

2.suitable for soft to medium hard formation, used to rotary motor drilling.

Business Terms:

Port: Tianjin Port

Minimum Order Quantity: 2 Piece/Pieces

Supply Ability: 5 Piece/Pieces per Week

Payment Terms: T/T

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Specifications and Product Details:

1. F251/M221 Drill bit can improve drilling speed

2.suitable for soft to medium hard formation, used to rotary motor drilling.

3.with five interchangeable screw nozzles and one fixed nozzle to improve hydraulics of bit and therefore higher Rop.

4.With five spiral blades of ¢19mm and ¢13mm non-plannar interfaced diamond /carbide cutters, asymmetrical blades arrangement and special load- balanced cutter arrangement design improve bit stability and therefore higher Rop.

Bit specification
size and type	8-1/2″F251
blade Qty.	5
nozzle Qty.	5SP+1F
Gauge length	2 1/2″(63.5mm)
junk slot area	17.5in²(112.77cm²)
Connection of API	4-1/2″API REG .
recommended operation parameters
Flow rate L/S	25-38
Rotating speed (RPM)	60-350
weight on bit (KN)	12-72
Maximum weight on bit ( KN)	89
The selection of characteristics for combination
8-1/2″F251	B. strengthen the gauge D suitable for drilling in the medium hard gridding formation
8-1/2″F251