Detailed Product Description
A complete line from 3 7/8'' (98mm)~26''(660mm);
IADC code in all sizes and in stocks;
Used for oil/water well,mining,etc;
1.Suitable for medium formation with harder,more abrasive streaks. (hard shale,mudstone,
soft limestone,etc.)
2.This series bits are sealed with journal bearing,which can drill stably with high rotary speed.
3.Hardfaced of head bearing to increase the wear resistance.
4.New type of grease is used which can resist high temperature.
Just let me know if you have any needs.
Thanks
Sunny(sunny19890215 at hotmail dot com)