| 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 pride ourselves on having the most professional and experienced senior engineers in this field, ensuring every project is executed with unparalleled expertise.
Our commitment to excellence guarantees that we deliver only the highest quality products to meet your needs and surpass your expectations.
2.MANUFACTURER Our strategic positioning ensures that we can offer you a competitive price without compromising on quality.
3. Our sincere and dedicated sales team forms the backbone of our business, providing you with honest and reliable service.
4. We offer a versatile range of products with different sizes and dimensions tailored to your specific requirements.
5. With a substantial bulk stock on hand, we ensure that your orders are delivered swiftly and efficiently.
6. We are committed to providing the best after-sales service, ensuring your satisfaction long after your purchase.
We warmly welcome you to inquire and visit our factory to see our dedication to quality and innovation firsthand.
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