ZhuZhou Better Tungsten Carbide Co., Ltd
Choose Zzbetter, Choose A Way To Success
Add to Cart
Specifications of PDC bits
1. High drilling speed, good gauge protection of PDC core bits.
2. Mainly used for geological prospecting,coal exploration,etc
A wide range of full-hole drill bits with polycrystalline diamond cutters (PDC) are available for numerous applications in mining, civil engineering and the oil and gas industries. These span between small bits 2″ diameter used in mines for drilling holes for roof-bolts to larger diameter bits used for horizontal drilling.
All these bits have a full tungsten carbide matrix crown imparting a much superior wear resistance than equivalent steel-headeds bits. PDC drill bits easily beat the performance of conventional roller cone bits, in some cases achieving 10-20 times bit life and 2-3 times the rate of penetration.
PDC drill bits rapidly produce a large volume of cuttings, and drilllers need to ensure that flush volumes are high enough to keep the bit face really clean and cool.
| PDC DRILL BITS - STANDARD CONNECTION SIZES | ||
| BIT SIZE(INCH) | API REGULAR PIN(INCH) | RECOMMENDED MAKE UP TORQUE(KN.M) |
| 4 1/2 to 4 3/4 | 2 7/8 API | 6.0~7.5 |
| 5 1/8 to 7 3/8 | 3 1/8 API | 9.5~12 |
| 7 1/2 to 9 3/8 | 4 1/2 API | 16.0~22 |
| 9 1/2 to 14 1/2 | 6 5/8 API | 38~43 |
| 14 5/8 to 17 1/2 | 7 5/8 API | 46~54 |
