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12 1/4" PDC/tricone combined bit
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Core and combined bit
Product details
Nomenclature of RUlSHI Core and combined bit Model
| S | 19 | 5 | 5 | X |
| S: Steel Body PDC Bit M： Matrix Body PDC Bit |
Cutter Size 19: diameter 19mm 16: diameter 16mm 13: diameter 13mm |
Blade Count 3、4、5、6... |
Formation from soft to hard 1-7 |
Design Characters J/A J Series X Sprial Gauge C Sidetracking Bit Q Core Bit B Bi-center Bit F Row Cutters G Advanced Cutters |
BITS SPECIFICATIONS
| Size | 8 1/2" |
| Number of blade | - |
| Primary Cutter Size(mm) | 4x4x4x2.8 |
| TFA（in2） | 0.2-1.5 |
| Gauge Length | 1.5" |
| Connection |
CHUAN8-3CBS |
RECOMMENDED PARAMETERS
| Rotary Speed(rpm) | 40-80 |
| Weight On Bit(KN) | 10-70 |
| Flow Rate(lps) | 11-25 |
Trait:short parabola biconical crown、core
Suitable for various complex formations
Hard formations, interlayer, gravel formations, dense abrasive formations
Combining the characteristics of PDC bit and tricone bit
Increase the penetration rate and footage depth、Greatly enhance the attack ability of rock breaking、The effect of deviated section is outstanding
Anti-rotation design
Increase the penetration rate and stability
The gauge with high-quality PDC cutters
Reduce the wear of the gauge、increase the wear resistance and stability of the gauge
Surface welding of high-performance wear-resistant materials
Increase the wear resistance and compression resistance of the bit
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To: Hebei Ruishi Bits Manufacturing Co.,Ltd
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No. 502, Taishan North Road, Renqiu Economic Development Zone, Hebei China
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