Best Quality Rock Drilling Equipment Manufacturers

• Customized: Non-Customized
• Standard: JIS, AISI, API
• Length: Stub-length
• Type: Core Drill Bit
• Material: Tungsten Carbide
• Usage: Wood Drilling, Well Drilling, Metal Drilling, Masonry Drilling
• Material of Drill Bits: 42CrMo+Tungsten Carbide
• Any Other Size: 100mm, 110mm, 120mm, 130mm, 140mm, 150mm Ect
• Number of Air Holes: 2 or 3
• Color of Drill Bit: Golden, Yellow, Red, Blue, Green
• Transport Package: Wooden Case
• Origin: China
• HS Code: 8207199000
• Production Capacity: 1000000

Product Description

Best quality rock drilling equipment manufacturers
 
General Introduction:
Our DTH hammers are all simple structure, easy to assemble and disassemble, as well as reliable quality and long service life. We have various hammer models suitable to drill holes from 64mm to 1000 mm (2-1/2" ~ 39-3/8") in diameter; and come with three kind: low pressure (5 ~ 7 bars), middle pressure (7 ~ 15 bar) and high pressure ­­(7~ 30 bars).
Our DTH hammers mainly be produced with shank type of DHD, QL, SF, COP, Mission, SD, BR, CIR and ACD series, Diameter ranging from 2" to 8" for mining and quarrying, and 6" to 32" for      water-well drilling, oil-well drilling and foundation and so on.

DTH Hammer Selection:
Choosing the right hammer is largely determined by drill machines (mainly compressor output), drilling hole size and type of rock formation. Ideally, the size of the hammer should match the required hole dimension as closely as possible, leaving just enough space for compressed air to flush cuttings and clean the hole.
The optimum range of hole size for blast-hole drilling with DTH method is 90~254 mm (3-1/2" ~ 10") with 3.5 ~ 8" hammers. Smaller blast holes are generally drilled with top-hammer tools, while larger holes typically with rotary drilling tools. In other applications, like foundation drilling, DTH hammers can be used in hole size up to 1,000 mm (39-3/8").

Usually, the smallest hole diameter a DTH hammer can drill is its nominal size, for example, a 4" hammer would drill a 4" (100/102 mm) hole. The limiting factor is the outside diameter of the hammer, because, as hole diameter reduces, airflow is restricted. Maximum hole size for production drilling is the nominal hammer size plus 1"for 5" and smaller hammers and plus 2 for 6" and bigger hammers, for example, for a 4" hammer the maximum hole size is 5" (127/130mm) while for a 8" hammer the maximum hole size is 10" (254mm).


Shape of tungsten carbide buttons:



Specificsations of our down the hole hammers:

Hammers	Bit Shank	Connection Thread	Suitable bit	Working pressure	Air consumption
1-3" Middle-low pressure DTH hammers		RD40 box		7-17.5bar	0.7Mpa	4.5m3/min
	BR1	RD50 box	φ64-φ76mm	7-17.5bar
	BR2	API 2 3/8" Reg	φ70-φ90mm	7-17.5bar	1.0Mpa	4m3/min
	BR3		φ90-φ110mm		1.4Mpa	5m3/min
3" hammers	DHD3.5	API 2 3/8"Reg	φ90-φ110mm	10-15bar	1.0Mpa	4.5m3/min
	COP32/COP34
	M30				1.5Mpa	9m3/min
4" hammers	DHD340	API 2 3/8"Reg	φ105-φ130mm	10-25bar	1.0Mpa	6m3/min
	COP44
	QL40
	SD4				1.8Mpa	10m3/min
	M40				2.4Mpa	15m3/min
5" hammers	DHD350	API 2 3/8"Reg/API 3 1/2"Reg	φ130-φ156mm	10-25bar	1.0Mpa	9m3/min
	COP54
	QL50
	SD5				1.8Mpa	15m3/min
	M50				2.4Mpa	23m3/min
6" hammers	DHD360	API 3 1/2"Reg	φ152-φ203mm	10-35bar	1.0Mpa	10m3/min
	COP64
	QL60
	SD6				1.8Mpa	20m3/min
	M60				2.4Mpa	28.5m3/min
8" hammers	DHD380	API 4 1/2"Reg	φ200-φ279mm	10-35bar	1.0Mpa	15m3/min
	COP84
	QL80				1.8Mpa	26m3/min
	SD8				2.4Mpa	34m3/min
10" hammers	SD10	API 6 5/8"Reg	φ254-φ330mm	10-35bar	1.0Mpa	22m3/min
	NUMA100				1.8Mpa	40m3/min
					2.4Mpa	55m3/min
12" hammers	DHD1120	API 6 5/8"Reg	φ305-φ381mm	10-35bar	1.0Mpa	30m3/min
	SD12
	NUMA120				1.8Mpa	56m3/min
	NUMA125				2.4Mpa	78m3/min

Specificsations of our down the hole drill bits:

DHD shank Bits	Bit Dia.		No.	Gauge	Front	Weight	Part No.
	mm	inch	Air Holes	Buttons	Buttons	(Kgs)
DHD3.5/COP34/Cop32	85	3 11/32"	2	6×φ13	4×φ12	4.2	DHD35-85
	90	3 1/2"	2	6×φ14	4×φ12	4.5	DHD35-90
	95	3 3/4"	2	6×φ14	4×φ13	4.8	DHD35-95
	100	3 7/8"	2	8×φ12	6×φ12	5	DHD35-100
	105	4 1/8"	2	8×φ13	6×φ12	5.5	DHD35-105
DHD340/COP44	105	4 1/8"	2	6×φ14	5×φ13	9	DHD340-105
	110	4 1/4"	2	7×φ13	6×φ13	9.3	DHD340-110
	115	4 1/2"	2	7×φ14	6×φ13	10	DHD340-115
	120	4 3/4"	2	8×φ14	6×φ14	11	DHD340-120
	127	5	2	8×φ14	7×φ14	12	DHD340-127
DHD350/COP54	133	5 1/4"	2	7×φ16	6×φ14	15	DHD350-133
	140	5 1/2"	2	7×φ18	7×φ14	16	DHD350-140
	146	5 3/4"	2	8×φ18	7×φ14	17	DHD350-146
	152	6"	2	8×φ18	8×φ14	17.5	DHD350-152
	165	6 1/2"	2	8×φ18	8×φ16	18.5	DHD350-165
DHD360/COP64	152	6"	2	8×φ16	8×φ16	26	DHD360-152
	165	6 1/2"	2	8×φ18	8×φ16	28	DHD360-165
	178	7"	2	8×φ18	8×φ18	30.5	DHD360-178
	190	7 1/2"	3	9×φ18	9×φ16	34	DHD360-190
	203	8"	3	9×φ18	9×φ18	36	DHD360-203
DHD380/COP84	195	7 11/16	3	9×φ18	9×φ16	32	DHD380-195
	203	8"	2	9×φ18	10×φ18	41	DHD380-203
	216	8 1/2"	2	10×φ18	12×φ16	49	DHD380-216
	254	10"	3	11×φ18	17×φ16	71	DHD380-254
	305	12"	4	12×φ18	29×φ16	95	DHD380-305
DHD1120	305	12"	4	12×φ18	36×φ16	152	DHD1120-305
	311	12 1/4"	4	12×φ18	36×φ16	157	DHD1120-311
	330	13"	4	16×φ18	42×φ16	165	DHD1120-330
	356	14"	4	16×φ19	48×φ16	178	DHD1120-356
	381	15"	4	16×φ19	48×φ18	198	DHD1120-381

Package:
 In wooden box wrapped by waterproof paper each.
The package is available based on customers' requirements.


 
Usage:
Suitable for cutting, drilling various hard Non-ferrous materials, such
as marble, granite, glass, ceramic, hard concrete and brick, for oil , mining , break stone.

Pictures of our carbide drill bits and dth hammer:




Shank can be available:
1), Dia. 64mm-70mm CIR70/65
2), Dia. 70mm-95mm CIR70/90
3), Dia. 90mm-102mm shank COP32, COP34, M30, DHD3.5
4), Dia. 105mm-152mm shank COP44, DHD340, SD4, M40, QL40
5), Dia. 135mm-165mm shank COP54, DHD350R, COP54,  SD5, M50, QL50
6), Dia. 152mm-254mm shank COP64, DHD360, SD6, M60, QL60
7), Dia. 203mm-330mm shank COP84, DHD380, SD8, QL80
8), Dia. 254mm-380mm shank SD10, Numa100
9), Dia. 305mm-508mm shank DHD1120, SD12, N120, N125
10), Dia. 405mm-864mm shank SD15, SD18
11),  CIR100, CIR110, CIR150, CIR200 and etc.

Thats all, thanks for reading!