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Chemshine Carbon Co.,Ltd
Chemshine Carbon Co.,Ltd
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NW Rock Drill Bits Impregnated Casing Shoe Bit For Geological Exploration

Chemshine Carbon Co.,Ltd
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Chemshine Carbon Co.,Ltd
City: Xiamen
Province/State: Fujian
Country/Region: China
Tel: 86-592-5530176
Contact Person:
Mr CHEN

NW Rock Drill Bits Impregnated Casing Shoe Bit For Geological Exploration

Brand Name : Chemshine
Model Number : NW
Certification : ISO9001
Place of Origin : China
MOQ : 1pcs
Price : Negotiable
Payment Terms : T/T
Supply Ability : 66000pcs/month
Delivery Time : 7-8days
Packaging Details : Packed in standard box
Processing Type : sintering
Material : High grade diamonds
Cutter Materia : synthetic diamond segment
Advantage : high grade material and advanced heat treatment
Clients`s feedback : Very cost-effective
Use : mineral exploration,geological exploration
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NW rock drill bit NW impregnated casing shoes casing shoe bit for drilling


Impregnated diamond casing shoe is the most commonly used as it has the widest range of application and is generally the most efficient tool for advancing casing through overburden layers. We have two crown types of impregnated diamond casing shoes available, flat and V-ring.

Surface set diamond casing shoe differs from the impregnated type in that they are set with a single layer of natural drill diamond in a pre-determined pattern on the working surfaces of the tool. Surface-set diamond casing shoes are recommended for use when drilling relatively soft and abrasive formations such as sandstone or limestone.

Tungsten-Carbide casing shoe set with large tungsten-carbide elements that are physically embedded into the crown of the tool. Tungsten-carbide does not possess the hardness of diamond but it is very cost effective means of drilling through softer unconsolidated formations. The application of this type of casing shoe is primarily in geotechnical soil investigation or for advancing casing tubes through overburden layers that are composed mainly of clay, sand, gypsum or soft shale.

TypeSizeOutside diameterInside diameter
Standard Casing ShoesInchMmInchMm
RW1.475~1.46537.46~37.211.188~1.18330.18~30.05
EW1.880~1.87047.75~47.501.497~1.49238.02~37.90
AW2.350~2.34059.69~59.441.902~1.89748.31~48.18
BW2.970~2.96075.44~75.192.377~2.36760.38~60.12
NW3.620~3.61091.95~91.702.997~2.98776.12~75.87
HW-CDDA4.632~4.617117.65~117.273.930~3.92099.82~99.57
HW-DCDMA4.632~4.617117.65~117.273.980~3.970101.09~100.84
HWT4.632~4.617117.65~117.273.930~3.92099.82~99.57
PW5.660~5.640143.76~143.264.865~4.850123.57~123.19
PWT5.660~5.640143.76~143.264.865~4.850123.57~123.19
SW6.800~6.780172.72~172.215.948~5.933151.08~150.70
UW7.815~7.785198.50~197.746.916~6.896175.67~175.16
ZW8.825~8.795224.15~223.407.987~7.967202.87~202.36
Metric Casing Shoes46mm1.818~1.80846.18~45.921.462~1.45237.13~36.88
56mm2.210~2.20056.13~55.881.855~1.84547.12~46.87
66mm2.603~2.59366.12~65.872.249~2.23957.12~56.87
76mm2.997~2.98776.12~75.872.643~2.63367.13~66.88
86mm3.391~3.38186.13~85.883.037~3.02775.14~76.89
101mm3.985~3.970101.22~100.843.460~3.44587.88~87.50
116mm4.575~4.560116.20~115.824.063~4.048103.20~102.82
131mm5.165~5.150131.19~130.814.700~4.685119.38~119.00
146mm5.755~5.740146.18~145.805.244~5.229133.20~132.81

Standard Casing Shoes

(For use with DCDMA and CDDA

Standard Casing)

BW2.970~2.96075.44~75.192.220~2.21056.39~56.13
NW3.620~3.61091.95~91.702.845~2.83572.26~72.00
HW4.632~4.617117.65~117.273.782~3.77296.06~95.81

Wide-Kerf Casing Bits

(For use with DCDMA and CDDA

Standard Casing)

BW (NWL)2.970~2.96075.44~75.191.880~1.87047.75~47.50
NW (HWL)3.770~3.75595.76~95.382.505~2.49563.63~63.38
HW (PWL)4.815~4.795122.30~121.803.350~3.34085.09~84.84

British Standard BS879

Water Well Casing Shoes

4 inch4.635~4.615117.73~117.223.824~3.80997.13~96.75
5 inch5.660~5.640143.76~143.264.833~4.813122.75~122.25
6 inch6.800~6.780172.72~172.215.833~5.818148.15~147.75
8 inch8.835~8.815224.41~223.907.835~7.815199.01~198.50
10 inch10.940~10.920277.88~277.379.825~9.805249.56~249.05

Note: The above size is only for reference and non-standard set diameters and may be available on request.


DescriptionSizeODID
Impregnated diamond core bitPQ122.2mm85mm
HQ95.58mm63.5mm
NQ75.3mm47.67mm
BQ59.6mm36.4mm
AQ47.6mm27mm
PQ3122.2mm83mm
HQ395.58mm61mm
NQ375.31mm45mm


Product Tags:

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