1.Efficient Inner Cuttings Discharge.Reverse‑circulation design removes rock cuttings through inner drill pipe passage, keeps borehole bottom clean, avoids re‑grinding debris and greatly improves drilling speed
2.Reliable Formation Sampling Performance.Delivers intact soil and rock samples, ideal for engineering investigation, mineral exploration and geological survey work.
3.Excellent Performance for Complex Broken Strata.Well adapted to sand layer, gravel and fractured rock, works stably in easy‑collapse borehole conditions for water well & mining projects.
4.Fit for Large‑Diameter Borehole Drilling.Optimized structure supports large aperture drilling, reduces air consumption and lowers matching requirement for air compressor.
5.Wide Compatibility for Reverse Circulation Drilling Rig.Matched with standard reverse circulation drill rods, widely applied in water well drilling, mining exploration and construction geotechnical drilling.
|
Specificction
|
Head Shape
|
Head Dia.(mm)
|
Shank Length
|
Spline
|
Port Holes
|
Button Type
|
Gauge Buttons
|
Front Buttons
|
Weight(KG)
|
|
RE004
|
Drop Center Face |
115
|
271
|
8
|
2
|
Domed
|
8*Φ14
|
4*Φ14+4*Φ13 |
11.5
|
|
Drop Center Face |
121
|
271
|
8
|
2
|
Domed
|
8*Φ14
|
4*Φ14+4*Φ13
|
12.1
|
|
|
Drop Center Face |
124
|
271 |
8
|
2
|
Domed
|
8*Φ16
|
4*Φ14+2*Φ14
|
12.3
|
|
|
Drop Center Face
|
127
|
271
|
8
|
2
|
Domed
|
8*Φ16 | 4*Φ14+2*Φ14 | 12.5 | |
|
RE542
|
Drop Center Face
|
121 |
225
|
8
|
2
|
Domed
|
8*Φ14
|
4*Φ14+4*Φ13
|
10.7
|
|
Drop Center Face
|
124
|
225
|
8
|
2
|
Parabola
|
8*Φ14
|
4*Φ14+4*Φ13
|
11
|
|
|
Drop Center Face
|
127 |
225
|
8
|
2
|
Domed
|
8*Φ16
|
4*Φ14+2*Φ14
|
11.2
|
|
|
Drop Center Face
|
133
|
225
|
8
|
2
|
Domed
|
8*Φ16
|
4*Φ14+2*Φ14
|
11.4
|
|
|
PR52
|
Drop Center Face
|
133
|
282
|
8
|
2
|
Domed
|
8*Φ16
|
6*Φ16+2*Φ14
|
16.5
|
|
Drop Center Face
|
136
|
282
|
8 |
2
|
Domed
|
8*Φ16
|
6*Φ16+2*Φ14
|
16.7
|
|
|
Drop Center Face
|
140
|
282
|
8
|
2
|
Domed
|
8*Φ16
|
6*Φ16+3*Φ14
|
16.9
|
|
|
Drop Center Face
|
143
|
282
|
8
|
2
|
Domed
|
8*Φ16
|
6*Φ16+3*Φ14
|
17.1 | |
|
PR54R
|
Drop Center Face
|
136
|
261
|
8
|
2
|
Domed
|
8*Φ16
|
6*Φ16+2*Φ14
|
18.3 |
|
Drop Center Face
|
140
|
261
|
8
|
2
|
Domed
|
8*Φ16
|
6*Φ16+3*Φ14
|
18.5
|
|
|
Drop Center Face
|
143
|
261
|
8
|
2
|
Domed
|
8*Φ16
|
6*Φ16+3*Φ14
|
18.7
|
|
|
Drop Center Face
|
165
|
261
|
8
|
2
|
Domed
|
8*Φ16
|
6*Φ16+3*Φ14
|
21
|
|
|
Drop Center Face
|
178
|
261
|
8
|
2
|
Domed
|
8*Φ18
|
6*Φ16+4*Φ16
|
22.5
|
|
|
Drop Center Face
|
127
|
261
|
8
|
2
|
Domed
|
8*Φ18
|
6*Φ16+4*Φ16
|
8.9
|
|
|
GT60
|
Flat Triangle Face
|
102
|
220 | 3 |
/
|
Domed
|
9*Φ13
|
9*Φ11
|
8.1
|
|
Flat Triangle Face
|
115
|
220 | 3 |
/
|
Domed
|
9*Φ14
|
10*Φ12
|
8.8
|
|
|
Flat Triangle Face
|
127
|
225 | 3 |
/
|
Domed
|
9*Φ16
|
10*Φ14
|
10.6
|
|
|
Flat Triangle Face
|
140
|
230 | 3 |
/
|
Domed
|
9*Φ16
|
10*Φ14
|
11.7
|
|
|
ST68
|
Flat Face
|
102
|
180 | 2 |
2
|
Domed
|
8*Φ14
|
6*Φ13
|
5.4
|
|
Center Drop Face
|
115
|
180 | 4 |
/
|
Domed
|
8*Φ14
|
4*Φ14+2*Φ13
|
6.65
|
|
|
Center Drop Face
|
127
|
190 | 4 |
/
|
Domed
|
8*Φ14
|
4*Φ14+3*Φ13
|
8.9
|
|
|
Center Drop Face
|
140
|
190 | 4 |
/
|
Domed
|
8*Φ16
|
4*Φ14+3*Φ13
|
10.8
|
|
|
T45-1
|
Triangle Face
|
89
|
145 | 4 |
/
|
Domed
|
8*Φ13
|
5*Φ13
|
3.5
|
|
Flat Triangle Face
|
102
|
150 | 3 |
/
|
Domed
|
9*Φ13
|
9*Φ11
|
4.5
|
|
|
Flat Triangle Face
|
115
|
160 | 3 |
/
|
Domed
|
9*Φ14
|
10*Φ12
|
5
|
|
|
T51-1
|
Flat Triangle Face
|
102
|
155 | 3 |
/
|
Domed
|
9*Φ13
|
9*Φ11
|
5.5
|
|
Flat Triangle Face
|
115
|
165 | 3 |
/
|
Domed
|
9*Φ14
|
10*Φ12
|
6.5
|
|
|
Flat Triangle Face
|
127
|
165 | 3 |
/
|
Domed
|
9*Φ14
|
10*Φ13
|
7.5
|
|
|
EL60
|
Flat Face
|
102
|
210 | 2 |
2
|
Domed
|
8*Φ14
|
6*Φ13
|
7.5 |
|
Flat Triangle Face
|
115
|
210 | 4 |
/
|
Domed
|
8*Φ14
|
4*Φ14+2*Φ13
|
8.2
|
|
|
Flat Triangle Face
|
127
|
220 | 4 |
/
|
Domed
|
8*Φ14
|
4*Φ14+3*Φ13
|
10
|
