coal mining deep well drill bit online manufacture

PDC Directional Diamond Drill Bit For Mine Coal Drilling Characteristics: 1. The crown of the bit is flat cast surface which is suitable for hard and non-abrasive formation. 2. The top of the bit is shallow ... Read More

6inch Directional Drill Bit with 4 Wings Use For Deep Well Drilling Characteristics: 1. The crown surface of the drill bit is a flat surface, which is suitable for hard and non-abrasive formations. It can be ... Read More

94mm PDC Well Bit Concave Drill Bit Rock Drill Bit Water Drill Bit Characteristics: 1. The top surface of the bit is shallow with 3 small nozzles. and in the circumferential direction of the blades there are 3 ... Read More

8.75inch 6 Blades PDC Drilling Bit Oil Drill Bit Factory 1. The cutting structure adopts the force balance design, asymmetric blade, deep chip flute design, etc., and the drill rotates at a higher speed. 2. The ... Read More

Tricone Rock Bit Roller Cone Drill Bit PDC Drill Bit Metal Roller Bit 1. The main purpose of the roller cone bit: drilling, exploration, oil, drilling 2. The roller cone bit mainly relies on percussion, ... Read More

9 1/2 Inch 6 Blades Mining Drill Bits Metal Drill Bits 1. Advanced geometric design for faseter penetration. 2. Added cutters for maximum performance. 3. TSP gauge protection. 4. Large junk slots for better ... Read More

9 1/2 Inch 6 Blades Mining Drill Bits Long Drill Bits High Quality 1. Advanced geometric design for faseter penetration. 2. Added cutters for maximum performance. 3. Large junk slots for better hole cleaning. 4... Read More

9 1/2 Inch 5 Blades High Quality Drill Bits Mining Drill Bits 1. Advanced geometric design, faster penetration. 2. Add tools for optimum performance. 3. Large trash chute for better hole cleaning. 4. Deep hole ... Read More