Dth Hammer Bits

168mm Overburden Drilling Ring Bit, Pilot Bit, Concentric Drill Bit

168mm Overburden Drilling Ring Bit, Pilot Bit, Concentric Drill Bit

Standard:API
Length:Jobber-length
Material:High Carbon Steel
Usage:Well Drilling
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Description of 168mm Overburden Drilling Ring Bit, Pilot Bit, Concentric Drill Bit

Product Description

168mm Overburden Drilling Ring Bit, Pilot Bit, Concentric Drill Bit

Concentric reaming bit _ casing drill anchor Drilling Rig _concentric heel-tube drill bit
Concentric drilling tools are mainly used in: hard loose broken or gravel, etc.
It is necessary to follow up the formation of casing at the same time, which has the advantage of good wall protection performance and high drilling efficiency.
1. High drilling efficiency
2. Eliminate hole burrow
3. The hole does not bend out of shape
High air pressure eccentric heel tube drilling tool:Φ108Φ127Φ146Φ158Φ168Φ178Φ219Φ245Φ273Φ323
Low wind pressure eccentric heel tube drilling tool:Φ108Φ127Φ146Φ158
Concentric drilling tools:108 114 127 140 146 168 178 183 194 219 273 324 406
Special models can be

Concentric drilling tools parameters:

168mm Overburden Drilling Ring Bit, Pilot Bit, Concentric Drill Bit

DTH Drill Bit Features
Fast drilling and retrieval!High efficiency, low labor intensity of workers!
DTH Drill Bit Usage
Widely used in earth and stone engineering mining Wells drilling construction projects drilling Wells edge pillar support.
DTH Drill Bit Model
Medium/Low wind pressure DTH Drill bit:80 90 100 110 120 130 140 150 180 185 200 220
High wind pressure DTH Drill bit:115 127 138 152 165 178 195 203 216 240 254 304

DTH Drill Bit Type
Medium/Low wind pressure DTH Drill bit,High wind pressure DTH Drill bit
DTH hammer Model
Medium/low wind pressure DTH hammer:CIR65 CIR70 CIR90 CIR110 CIR130 CIR150 CIR170 CIR200
High wind pressure DTH hammer:DHD340 DHD350 DHD360 DHD380 N125 SD12

Main Specification

Type	Model	Length (mm)	Weight (kg)	External Dia.(mm)	Hole Range (mm)
3.5 inch	DHD3.5	930	25	Φ82	Φ90-110
4 inch	DHD340	1030	39	Φ99	Φ110-135
	SD4	1084	40.5	Φ99
	QL4	1097	41	Φ99
	Mission40	1005	40	Φ99
5 inch	DHD350	1214	76.5	Φ125	Φ135-155
	SD5	1175	72.5	Φ125
	QL5	1147	73	Φ125
	Mission50	1110	68.5	Φ125
6 inch	DHD360	1248	100	Φ142	Φ155-190
	SD6	1261	100	Φ142
	QL6	1212	95	Φ146
	Mission60	1161	90	Φ146
8 inch	D85	1492	188	Φ180	Φ195-254
	SD8	1463	192	Φ180
	QL8	1465	182	Φ180
	Mission80	1338	176	Φ180
10 inch	SD10	1502	290	Φ226	Φ254-311
10 inch	NUMA100	1510	288	Φ226	Φ254-311
12 inch	DHD1120	All can be designed according to your requests!
	Numa120
	Numa 125

DTH Hammer Drill Bits Application

Widely used in metallurgical, coal, chemical, building materials are not busy mines and water conservancy, hydropower, highway and railway defense construction projects, etc. Suitable for dry wind water mixing and shotgun-hole water gushing wet operation, reliable performance, is the ideal drilling hole and rock drilling equipment.