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Size |
| AW, BW, NQ, NQ3, HQ, NW, HW |
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Usage |
1) Drill rods
It is sustained by a chuck of a drill rig. It digs by using a core barrel and a bit at front.
Its major function is to transport the rotation and pressure of a drilling machine to the bit, as well as delivering drilling water to the bit.
They also cool the bit rapidly and carry slime.
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Drill rods specifications |
| ITEM |
LENGTH |
O.D. |
I.D. |
| HQ DRILL RODS |
3000mm 3mm |
Min. 88.90 mm |
Min. 77.8 mm |
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Max. 89.15 mm |
Max. 78.0 mm |
| NQ DRILL RODS |
3000mm 3mm |
Min. 69.85 mm |
Min. 60.12 mm |
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Max. 70.05 mm |
Max. 60.33 mm |
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2) Casing pipe
The pipe is used to retain a vacant wall to the target depth of boring. When using on the ground with poor geotechnical condition, several casing pipes are inserted to the target depth to protect the vacant space. |
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Casing |
| Size |
OD (mm) |
ID (mm) |
Weight (kg/3m) |
Threads (per inch) |
Content ( L/100 m ) |
| RW |
36.5 |
30.2 |
8.0 |
5 |
70.9 |
| EW |
46.0 |
38.1 |
12.5 |
4 |
113.8 |
| AW |
57.1 |
48.4 |
17.0 |
4 |
184.1 |
| BW |
73.0 |
60.3 |
31.3 |
4 |
285.8 |
| NW |
88.9 |
76.2 |
38.4 |
4 |
455.7 |
| HW |
114.3 |
101.6 |
50.5 |
4 |
810.4 |
| PW |
139.7 |
127.0 |
64.3 |
3 |
1266.6 |
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OTHER SPEC |
- Min. Tensile Strength : 900N/mm2
- Min. Yield Stress : 800N/mm2
- Min. Extension : 14%
- Min. Surface Hardness : HRC 30 ~ 35 ( 262 Brinell )
- seamless, cold drawing
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Characteristics |
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The Taesung Drill rods take advantage of the supreme raw materials as shown above.
It satisfies the standard size of boring Drill rods. They are now exported to many countries including the Republic of Kazakhstan, Mongolia, and Indonesia.
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