| After-sales Service: | Provided |
|---|---|
| Warranty: | 6 Month |
| Manufacturing Process: | Forging |
| Surface Treatment: | Polishing |
| Operation Pressure: | Atmospheric Pressure |
| Material: | Cast Steel |
| Customization: |
|---|
Suppliers with verified business licenses
Audited Supplier 
|
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
|
|
NUMA100
|
1510
|
288
|
Φ226
|
||
|
12 inch
|
DHD1120
|
All can be designed according to your requests!
|
|||
|
Numa120
|
|||||
|
Numa 125
|
|||||
-COMPANY PROFILE-
PEARLDRILL is a leader in the manufacture and development of many kinds of bits in China. We provide the best quality PDC coring drill, DTH drill, Tri drill bits etc to the market, all types of non-coring or coring drill traces. Our drill bits are used for well drilling, mining and construction contractors. Our drill bit has been tested and verified by time, with wear resistance and fast drilling speed. Different drill bits can be customized according to different rock formations. The engineering time is greatly shortened, and the maximum performance is exerted in the operation during drilling. Our products are durable and reliable. Our products are the preferred drill bits for drilling engineers in many countries because of our precise design and efficient drilling during use.
Main product
-WHY CHOSE US-
DIY customization: please provide your rock formation information or detailed size drawings.
Free samples: some samples can be provided free of charge.
Payment:T/T L/C,D/A,D/P,Western Union,MoneyGram.
| Packaging |
| Wood Box Fumigation Tray if necessary Other special package can be applied according to customer's need |
| Delivery |
| Prepared to deliver within 1 week, if in stock Depends on order quantity, when out of stock Transportation:By sea or air |
Suppliers with verified business licenses
Audited Supplier 
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