BW NW HW PW SW TW UW ZW Casing Pipe Tubes

SWCasingforMineralExploration,SiteInvestigation-
SWCasingforMineralExploration,SiteInvestigation
SWCASINGPIPE

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.