China manufacturer hard roack geological drilling impregnated nq diamond core drill bits

Features:
1.High penetration rate and drilling effeciency.
2.Long service life;
3.Good gauge effect;
4.High cost performance;
5.Wide usable range, diamond core bits are the most commonly useful bits in the mineral exploration industry.
Specification:
Double tube surface
Size( surface exploration drill
Matric system(mm)
Imperial system( in )
Hole diameter
Core diameter
Hole diameter
Core diameter
BQ
60
36.4
2.36
1.43
NQ
75.7
47.6
2.98
1.88
HQ
96.1
63.5
3.78
2.5
PQ
122.7
85
4.83
3.34
Triple tube surface
NQ3
75.7
45
2.98
1.78
HQ3
96.1
61.1
3.78
2.41
PQ3
122.7
83
4.83
3.27
We supplyA-Gauge impregnated core bit:AQ, AW, AGM;
B-Gauge impregnated diamond core bit: BQ, BQ3, BTW, BX, LTK60;
N-gauge impregnated core bit:NQ, NQ2, NQ3, NMLC, TNW;
H-gauge impregnated core bit:HQ, HQ3, HMLC, HTW, HWF;
P-gauge impregnated core drilling bit:PQ, PQ3;
TT46T2-46,TT56,T2-56,T2-66,T2-76,T2-86,T2-101;
T6-76 impregnated diamond core bit,T6-86,T6-101,T6-116,T6-131,T6-146, etc.