Introduction
Size
AW, BW, NQ, NQ3, HQ, NW, HW
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.
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.
Specification(Drill rods)
ITEM
LENGTH
O.D.
I.D.
HQ DRILL RODS
3000mm 3mm
Min. 88.90 mm
Min. 77.8 mm
Max. 89.15 mm
Max. 78.0 mm
NQ DRILL RODS
3000mm 3mm
Min. 69.85 mm
Min. 60.12 mm
Max. 70.05 mm
Max. 60.33 mm
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