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dth drill bit, Different drill bit for different rock conditions, Top quality cemented carbide, Long service life - details see: https://www.machineto.com/high-air-pressure-best-quality-sandvik-of-hammer-bit-10317318

DTH drill bit

ZR has been a top class manufacturer in Drilling Tools Industry. Its high pressure DTH hammer and drill bits has been popular in chinese markets.

COP44, 54,64,84 hammer and assorted drill bits is the main products.

No.	Descripation	Model	Match hammer	Front buttons	Gauge buttons	Bit face design	Weight (kg)
1	Tapered chisel bit	ZRQ20	-	-	-	-	0.09
2	Low pneumatic DTH drill bit	ZRQ90	ZRC80Z	2-1217ZL	6-1420ZL	Convex face	3.8
				2-1319ZL
3		ZRQ100		3-1217ZL	6-1420ZL	Convex face	4.2
				2-1420ZL
4		ZRQ110-A		4-1217ZL	6-1420ZL	Convex face	4.7
				3-1319ZL
5		ZRQ110	ZRC100Z	6-1319QL	7-1422QL	Convex face	5.8
6	High pneumatic DTH drill bit	ZRQ115G-A	ZRC100G ZRC100G-A DHD340 COP44	6-1319Q	8-1422Q	Flat face	8.2
7		ZRQ115G-AZ		6-1319Z	8-1422Q	Flat face	8.2
8		ZRQ115G-B		6-1319Z	8-1422Q	Convex face	8.1
9		ZRQ115G-C		6-1319Q	7-1624Q	Flat face	8.2
9		ZRQ115G-CW		6-1319Q	7-1624Q	Flat face
10		ZRQ115G-CZ		6-1319Z	7-1624Q	Flat face	8.2
11		ZRQ115G-CZW		6-1319Z	7-1624Q	Flat face
11		ZRQ115G-D		6-1420Z	7-1624Q	Convex face	8.1
13		ZRQ115G-DW	ZRC100G	6-1420Z	7-1624Q	Convex face
12		ZRQ115G-E	ZRC100G-A	6-1319Q	8-1422Q	Flat face	8.2
13		ZRQ115G-EZ		6-1319Z	8-1422Q	Flat face	8.2
13		ZRQ115G-F		6-1319Q	7-1826Q	Flat face
14		ZRQ140G-A	ZRC130G ZRC130G-A DHD350 COP54	7-1422Q	7-1826Q	Flat face	16.4
15		ZRQ140G-AZ		7-1420Z	7-1826Q	Flat face	16.4
16		ZRQ140G-B		7-1420Z	7-1826Q	Convex face	16.2
17		ZRQ152G-A		8-1422Q	8-1826Q	Flat face	16.4
18		ZRQ152G	ZRC150G DHD360 COP64	4-1621Q	8-1624Q	Concave face	16.2
				4-1422Q
19		ZRQ165G		11-1621Q	8-1624Q	Flat face	24.4
20		ZRQ165G-A		8-1621Q	8-1826Q	Flat face	24.3
21		ZRQ165G-B		9-1621Q	9-1826Q	Flat face	24.3
22		ZRQ178G		10-1621Q	9-1826Q	Concave face	25.5
23		ZRQ203G		11-1621Q	9-1826Q	Flat face	30.2
24		ZRQ203G-A		6-1826Q	9-1826Q	Concave face,
Concentric Casing System With Ring Bits ZRTG140
Outer dia.of casing tube		Inner dia.of casing tube	Outer dia. of ring bit	Inner dia. of ring bit	Outer dia. of pilot bit	Match hammer	Weight (kg)
183mm		163mm	188mm	140mm	160mm	ZRC130G	60.3