
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 |
CGE Group Wuxi Drilling Tools Co., Ltd.
CGE Group Wuxi Drilling tools Co.,Ltd. (formerly named Wuxi drilling tool factory Co., Ltd) was founded in 1958, which is a state-owned leading enterprise . We’re the strategic partner of Atlas Copco ( Epiroc) since 2012.
Our company covers 120 mu and has a total assets around 20000 million Rmb. We have around 200 employees, including 10 technicians.
The main products we manufactured are listed as bellow:
1.China national standard coring drill system products
2.DCDMA standard products: A, B, N, H, Q series ,T2, T6 series impregnated diamond bit, PDC bit, surface set bit, drill rod, core barrel assembly, overshot, water swivel, hoist, circle wrench...
3.API standard drill rod for oil & water well drilling rod
4.Equipment for water conservancy, geology, unconventional oil & gas, and environment treatment, as well as doing relevant trades & services.
Warehouse
Quality Control Department
We have been strictly controlled the quality of our raw materials, and all of our steel metals
are from famous steel mills (factories).
Department Of Technology
Can innovate products following market trend based on customer’s need and valuable
feedback.
● Passed the certification of ISO 9001:2000 quality system.
● Passed OHSAS18000 Occupational Health and Safety Management System
Certification .
● Have more than 70 items independent intellectual property patents.
Products are used in many national major projects