| 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: Unleashing unmatched expertise and prowess in the industry, we hold a stellar competitive edge, built on a foundation of trust and innovation.
1. Our team comprises the most professional and seasoned senior engineers, each bringing a wealth of experience and knowledge to the field.
We guarantee high-quality products, ensuring that each item meets the rigorous standards our clients expect.
2. As a distinguished MANUFACTURER, our strategic position in the market ensures that we can offer highly competitive pricing.Our manufacturing excellence shines through in each meticulously crafted product. Through our advantageous position, we deliver competitive pricing without compromising on quality.
3. Our business is built on trust, with sincere salesmen ready to assist and provide unparalleled customer service, forming the bedrock of our commercial ethos.
4. Offering versatility, we provide a range of different sizes and dimensions to meet diverse needs and applications.
5. Maintaining a substantial inventory of bulk stock, we ensure fast and efficient delivery, minimizing wait times for our valued customers.
6. We pride ourselves on delivering the best after-sales service, committed to supporting our clients long after the initial purchase.
Welcome to inquire and visit our factory: Experience firsthand the dedication and excellence of Hejian Tianrun Machinery Co., Ltd. We invite you to explore our facilities and engage with our expert team.
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