| 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. Our team boasts the most highly skilled and seasoned senior engineers, leading the industry with unparalleled expertise.
We are committed to guaranteeing products of the highest quality, ensuring reliability and excellence.
2. As the original manufacturer, our strategic position allows us to offer the most competitive pricing in the market.MANUFACTURER Our advantageous location ensures that we can provide our products at competitive prices.
3. Trustworthy and dedicated sales personnel form the foundation of our business, prioritizing your needs.
4. We offer a wide range of sizes and dimensions, tailored to meet diverse requirements and preferences.
5. With a substantial bulk stock, we guarantee rapid delivery, ensuring your projects stay on schedule.
6. Our commitment to excellence extends to our superior after-sales service, ensuring satisfaction and support.
We warmly welcome your inquiries and encourage you to visit our factory to witness our operations firsthand.
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