| Customization: | Available |
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| Customized: | Customized |
| Standard: | API |
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IADC
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WOB(KN/mm Bit Dia.)
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RPM(r/min)
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Applicable Formations
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435
515 |
0.20~0.70
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200~80
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Soft with very low compressive strength such as shale ,clay, sandstone ,soft limestone ,etc
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535
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0.35~0.80
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200~80
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Medium soft with low compressive strength and harder abrasive stringers ,such as hard shale ,hared gypsolyte, soft limestone,
sandstone and dolomite with stringer ,etc |
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417
437 |
0.35~0.90
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140~70
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Very soft with low compressive strength and high drillability, such as shale, clay, sandstone and conglomerate ,etc.
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517
527 |
0.35~1.05
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120~50
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Soft with low compressive strength, such as shale, clay, sandstone, soft limestone, salt bed and hard gypsolyte, etc
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537
547 |
0.35~1.05
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110~40
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Medium soft with low compressive strength and harder abrasive stringers, such as hard shale, hard gypsolyte, soft limestone,
sandstone and dolomite with stringers ,etc |
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617
627 |
0.35~1.05
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80~40
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Medium hard with high compressive strength and thick &hard stringers, such as hard shale, limestone, sandstone and dolomite, etc
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637
737 |
0.70~1.20
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70~40
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Medium hard with high compressive strength and high abrasiveness ,such as limestone ,dolomite, sandstone and chert ,etc
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Note: The upper limits of WOB and RPM in above table should not be used simultaneously
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Company Competitive Power:
1. We boast the most professional and experienced senior engineers who are pioneers in this field, ensuring cutting-edge innovation and expertise.
Our commitment to excellence guarantees high-quality products that are built to perform and endure.
2.MANUFACTURER Our strategic position in the market ensures our prices remain highly competitive, offering exceptional value.
3. Our business is built upon the foundation of sincere and dedicated sales personnel who prioritize your needs.
4. We provide a wide range of sizes and dimensions to meet your specific requirements, enhancing versatility and choice.
5. With a substantial stock available, we can ensure fast and efficient delivery to meet your demands promptly.
6. We offer unparalleled after-sales service, dedicated to ensuring your complete satisfaction and support.
We warmly welcome your inquiry and invite you to visit our state-of-the-art factory to witness our commitment to quality firsthand.
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