8" dth bit,

high pressure down-hole drill bit water hole:three match hammer:340,350,360,380 Long service life ISO certificate

DTH drill bit is our company main product.After mang years search,we have rich experience in development and manufacture which adopted high-quality raw materials, advanced craft technology and passed through strictly inspection, manufacturing high quality products.

If you interested in our product please contact freely.

DTH Bit

No.	type	inch		Air holes	Gauge	Front	spline	weight kg	Match hammer	Notes
		mm	inch
1	ZRQ-89-T45	89	3 1/2	4	7×φ13	5×φ12		3.2		T45Thread
2	ZRQ-102-T45	102	4	4	8×φ14	6×φ13		5.0		T45Thread
3	ZRQ -90L	90	3 1/2	2	6×φ14	2×φ12 2×φ13	6	3.9	ZRC90 ZRC930
4	ZRQ -100L	100	3 7/8	3	6×φ14	3×φ122×φ13	6	4.5
5	ZRQ -110L	110	4 3/8	3	6×φ14	4×φ123×φ13	6	4.8
6	ZRQ-110	110	4 3/8	2	7×φ14	6×φ13	6	5.8	ZRC110
7	ZRQ-90	90	3 1/2	2	7×φ14	6×φ12	8	4.8	ZRC90GDHD3.5 COP34
8	ZRQ-115	115	4 1/2	2	8×φ14	6×φ13	8	9.0	ZRC340DHD340COP44
9	ZRQ-115C	115	4 1/2	2	7×φ16	6×φ13	8	9.0
10	ZRQ-140	140	5 1/2	2	7×φ18	7×φ14	8	16.2	ZRC350DHD350COP54
11	ZRQ-152B	152	6	2	8×φ18	8×φ14	8	16.2
12	ZRQ-152	152	6	2	8×φ16	4×φ144×φ16	8	22.5	ZRC360DHD360COP64
13	ZRQ-165	165	6 1/2	2	8×φ16	11×φ16	8	24.7
14	ZRQ-165A	165	6 1/2	2	8×φ18	8×φ16	8	24.7
15	ZRQ-178	178	7	2	9×φ18	10×φ16	8	25.3
16	ZRQ-203	203	8	3	9×φ18	11×φ16	8	30.5
17	ZRQ -203A	203	8	3	9×φ18	4×φ166×φ18	8	30.5

8" dth bit,