Specifications

1. 15 years manufacturer
2. Certificate: ISO9001:2008
3. Material:Carbide Steel

T38 drill bit, T38 thread drill bit, T38 button drill bit:

(special good for mining, offer other spec. & OEM) :

 

Name of Product	Diameter	Tip Size(mm)		No. of Flushing Holes		Weight (kg)	Part-No.
	mm	Gauge	Front	Side	Front
Normal Thread T38	57	5*11	3*10	1	1	1.6	N57F5-T38
	64	5*12	3*11	1	1	1.6	N64F5-T38
	76	5*14	3*12	1	2	2.4	N76F5-T38
Normal Thread T38	64	8*9	4*9	2	2	1.8	N64F8-T38
	76	8*11	4*10	2	2	2.6	N76F8-T38
	89	8*12	6*11	2	2	3.3	N89F8-T38
	102	8*13	6*12	2	2	4.7	N102F8-T38
Normal Thread T38	64	6*10	4*9	0	3	1.7	N64D6-T38
	70	6*11	4*10	0	3	2.2	N70D6-T38
	89	6*14	4*12	0	3	4.3	N89D6-T38
Normal Thread T38	64	8*9	5*8	0	4	1.7	N64D8-T38
	70	8*10	5*9	0	4	2.2	N70D8-T38
	76	8*11	5*10	0	4	2.7	N76D8-T38
	89	8*12	6*11	0	4	3.3	N89D8-T38
	102	8*13	6*12	0	4	4.7	N102D8-T38
Retract Thread T38	60	8*9	3*9	2	2	1.7	R60F8-T38
	64	8*9	4*9	2	2	2.0	R64F8-T38
	70	8*10	4*10	2	2	2.4	R70F8-T38
	76	8*11	4*10	2	2	3.2	R76F8-T38
	89	8*12	5*12	2	2	5.8	R89F8-T38
Retract Thread T38	64	8*9	5*9	0	4	1.9	R64D8-T38
	70	8*10	5*10	0	4	2.4	R70D8-T38
	76	8*11	5*10	0	4	3.3	R76D8-T38
	89	8*12	6*11	0	4	5.3	R89D8-T38

 

Bit face shape selection:

1. Drop Center Bit

For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.

2. Concave Face

The all-round application bit face specifically for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity.

3. Convex Face

For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and may reduce the load and wear on the gauge buttons, but poor hole deviation control.

4. Double Gauge Face

This kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit.

5. Flat Face Bit

This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.

 

Carbide button shape selection:

1. Domed/Round Button

2. Parabolic/Semi-Ballistic Buttons

3. Ballistic Button

4. Sharp Button

5. Flat Button