CGE Group Wuxi Drilling Tools Co., Ltd.
A leading manufacturer in China for suppling drilling tools for mineral exploration and geotechnical drilling indutries, also the Strategic Partner of Atlas Copco/ Epiroc since the year of 2012 (XZ is
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HW DCDMA Borehole Wireline Drill Pipe Casing For Geotechnical Environmental Drilling
HW DCDMA borehole wireline casing tubes
This casing is intended for single use or situations where the casing is left in the hole. The HW
casing is made from DCDMA tubing and utilize the DCDMA W thread form. The HW thread is a
straight thread (4 threads per inch). This casing is universal in design and can be used in any drilling
application where threaded casing is required to be left in the ground.
Features
TUBING
Parallel wall tubing compatible with Wireline in-hole tools
Standard DCDMA W sizes allow ‘nesting’ of other W casing
THREAD DESIGN
Double-butt joint gives strength in driving and jarring
| Type | O.D./ I.D. | Recommended Drilling Depth |
| B/WL Drill Rod | Φ55.6mm/Φ46mm | 1200m |
| N/WL Drill Rod | Φ70.1mm/Φ60.1mm | 1800m |
| H/WL Drill Rod | Φ88.9mm/Φ77.8mm | 1800m |
| P/WL Drill Rod | Φ114.3mm/Φ101.6mm | 1800m |
| W Casing paramters | ||||||
| Std | OD (mm) | ID (mm) | Wall Thickness (mm) | Thread Pitch (mm) | Pin Thread Length (mm) | Weight (kg/m) |
| AW | 57.20 | 48.40 | 4.40 | 6.35 | 57.20 | 6.00 |
| BW | 73.00 | 60.30 | 6.00 | 6.35 | 63.50 | 11.00 |
| NW | 88.90 | 76.20 | 6.35 | 6.35 | 69.90 | 13.30 |
| HW | 114.30 | 101.60 | 6.35 | 6.35 | 76.20 | 17.30 |
| PW | 139.70 | 127.00 | 6.35 | 8.47 | 82.60 | 23.30 |