| 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 in this field, ensuring unparalleled expertise and innovation.
Our commitment to quality guarantees high-caliber products that meet the most rigorous standards.
2.MANUFACTURER Our strategic positioning ensures we offer a competitive price advantage, giving you unmatched value.
3. Our sincere and dedicated sales team forms the backbone of our business, ensuring customer satisfaction and trust.
4. We offer a wide range of sizes and dimensions to suit diverse needs and applications.
5. A robust stock inventory guarantees swift delivery, keeping your projects on schedule.
6. Experience unparalleled peace of mind with our unmatched after-sales service, dedicated to your satisfaction.
We warmly welcome you to inquire and visit our factory, where innovation and quality come to life.
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