BW NW HW PW SW TW UW ZW Casing Pipe Tubes
BW NW HW PW SW TW UW ZW Casing Pipe Tubes
Geological casing pipe tubes
W Series casing pipe
Flush jointed casing pipe: Each casing tube has a male thread at one end and Female thread at the other end. The heavy wall section provides internal and external mating shoulders for the threaded portion to butt-up against, providing twice the contact area of coupled casing pipe and helping to prevent the threads climbing under heavy torque loads. This is by far the most popular type of casing pipe used in geotechnical, geological, exploration diamond core drilling applications.
X Series Casing pipe
Flush coupled casing pipe: each casing pipe tube has a box thread at both ends and lengths are connected together by a pin to pin coupling. This allows couplings to be replaced when pin threads become worn or damaged. It also means that the casing pipe tube can have a thinner wall than the coupling, allowing the overall weight of casing string to be minimized. This can be important when drilling to greater depths. Casing pipe tube are available in DCDMA szie BW, NW, HW, PW, SW/SWT, UW and ZW, and metric size 46-254mm.
Casing Pipe Specifications | ||||
Flush Jointed W Series Casing pipe | ||||
Size | Outer Diameter | Inner Diameter | ||
inch | mm | inch | mm | |
BW | 2.874 | 73 | 2.374 | 60.3 |
NW | 3.500 | 88.9 | 3.000 | 76.2 |
HW | 4.500 | 114.3 | 4.000 | 101.5 |
PW | 5.500 | 139.7 | 5.000 | 127 |
SW | 6.625 | 168.3 | 5.937 | 150.8 |
Flush Coupled X Series Casing pipe | ||||
NX | 3.50 | 88.9 | 3.00 | 76.2 |
HX | 4.50 | 114.3 | 4.11 | 104.4 |
PX | 5.50 | 139.7 | 4.87 | 123.7 |
Notes: | ||||
Casing thread: 4 threads per inch | ||||
Casing length: generally supplied with length 3.0m, 1.5m, 1.0m, 0.75m. | ||||
Any sepcial length is available by requests. |