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Product Details:
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Product Description:
Our company's bits are used to drill Low -compressive strength soft formation ,high-compressive strength ,medium hard formation.
1 Long projection teeth are lengths used on high offset cones to provide the greatest penetration rates possible.
2.Wear-resistant hard facing is used to control tooth wear.
3.Durable hard facing is applied to reduce tooth wear
Size Avaluable:
From 3 7/8" (98.4mm) to 26"(660.4mm)
Bit size | Inch (in) | 5 7/8 | 6 | 61/8 | 6 1/4 | 7 7/8 | 8 3/8 | 8 1/2 | 8 3/4 | 9 1/2 | 9 5/8 | 9 3/4 | 9 7/8 | 12 1/4 | 13 3/4 |
Metric (mm) | 149.2 | 152.4 | 155.6 | 158.7 | 200.0 | 212.7 | 215.9 | 222.2 | 241.3 | 244.5 | 247.3 | 250.8 | 311.1 | 349.2 | |
Bit type | 437 | 437 | 437 | 437 | 447 | 417 | 417 | 417 | 417 | 417 | 417 | 417 | 417 | 417 | |
517 | 517 | 517 | 517 | 517 | 437 | 437 | 437 | 437 | 437 | 437 | 437 | 437 | 437 | ||
537 | 537 | 537 | 517 | 517 | 517 | 517 | 517 | 517 | 517 | 517 | 517 | ||||
617 | 617 | 547 | 537 | 537 | 537 | 537 | 537 | 537 | 537 | 537 | |||||
637 | 637 | 617 | 617 | 617 | 617 | ||||||||||
637 | 637 | 637 | |||||||||||||
API Regular Pin (in) | 3 1/2 | 4 1/2 | 6 5/8 | ||||||||||||
Recommended make-up torque for bit shank (KN.m) | 9.50-12.2 | 16.30-21.70 | 37.93-43.30 | ||||||||||||
