| 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 professional and seasoned senior engineers with unparalleled expertise in this field.
Ensuring superior quality products is our promise to every customer.
2.MANUFACTURER Our strategic position guarantees a highly competitive price.
3. Genuine and dedicated sales team forms the foundation of our business success.
4. We cater to diverse needs with a variety of sizes and dimensions readily available.
5. A substantial bulk stock allows us to provide swift delivery times.
6. We offer unparalleled after-sales service to ensure complete customer satisfaction.
We warmly welcome inquiries and visits to our factory. Experience our commitment to excellence firsthand.
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