DRILLWELL LTD design and manufacture a wide range of Rotary type Drag Bits of which are used in the same manor and purpose as the
Milled Tooth Rock Bits, except that they are limited to softer formations generally. They are in most cases cheaper than a Milled Tooth Rock Bit. The cutting profile maybe Flat, Chevron or Stepped according the application. They may also be used with Water, Mud or Air Flush.

DRILLWELL LTD supply a wide range of standard TC. Drag Bits with the profiles mentioned above..............

Important:
When ordering Tungsten Carbide Tipped Drag Bits please ensure that the following information is clearly given:-

  • Formation to be drilled ( Soft, Medium or Hard )
  • Flushing medium ( Water, Mud or Air Flush )
  • Profile of bit ( Flat, Chevron or Stepped )

Please contact our Technical Sales Department who will advise the formation to be drilled, Flushing medium or Whether Jet Nozzle type required. All our Diamond Drilling Bits & Shell products are designed and manufactured in house by our fully qualified engineers allowing us to provide a custom service and a fast turn around.

Drillwell Ltd - Diamond Drilling Bits & Shells - Tungsten Carbide Tipped Drag Bits

Tungsten Carbide Tipped Drag Bits - Information

              Bit Size
          In.          mm.

Thread

     Approx. Weight
        Ib.            kg.

        1 7/8          35

E Rod

         2.2          1.0

        2                48

E Rod

         2.2          1.0

        2 1/4          57

A Rod

         2.2          1.0

        2 1/2          63

A Rod

         2.4          1.1

        2 3/4          70

A Rod

         2.4          1.1

        3                76

N Rod

         2.6          1.2

        3 1/4          83

N Rod

         2.9          1.3

        3 1/2          89  

N Rod

         3.0          1.4

        3 3/4          95

N Rod

         3.3          1.5

        3 7/8          98  

2 3/8 API.

         3.9          1.75

        4                102

2 3/8 API.

         5.3          2.4

        4 1/4          108

2 3/8 API.

         5.3          2.4

        4 1/2          114

2 3/8 API.

         5.5          2.5

        4 3/4          121

2 3/8 API.

         6.0          2.75

        4 7/8          124

2 3/8 API.

         6.6          3.0

        5                127

2 3/8 API.

         7.9          3.6

        5 1/8          130

2 3/8 API.

         9.7          4.4

        5 1/4          133 

2 3/8 API.

         10.0        4.5

        5 1/2          140 

2 3/8 API.

         11.0        5.0

        5 5/8          143 

2 3/8 API.

         12.0        5.5

Diamond Drilling Bits & Shells - Tungsten Carbide Tipped Drag Bits - Drillwell Ltd
Diamond Drilling Bits & Shells - Tungsten Carbide Tipped Drag Bits Stepped - Drillwell Ltd

              Bit Size
          In.          mm.

Thread

     Approx. Weight
        Ib.            kg.

        5 3/4         146

2 7/8 API.

       15.0          6.8

        5 7/8         148

2 7/8 API.

       16.2          7.4

        6               152

3 1/2 API.

       18.0          8.2

        6 1/4         159

3 1/2 API.

       22.0          10.0

        6 1/2         165

3 1/2 API.

       27.0          12.3

        6 3/4         172

3 1/2 API.

       29.0          13.2

        7               179

3 1/2 API.

       32.0          14.4

        7 1/4         184  

3 1/2 API.

       36.0          16.4

        8               203

3 1/2 API.

       43.0          19.5

        8  1/2        215  

4 1/2 API.

       48.0          21.8

        8  3/4        222

4 1/2 API.

       52.0          23.6

        9               229

4 1/2 API.

       55.0          25.0

        9 5/8         244

4 1/2 API.

       58.3          26.5

        9 7/8         251

4 1/2 API.

       61.0          27.8

        10 5/8       270

6 5/8 API.

       86.0          39.0

        12 1/4       311

6 5/8 API.

       90.0          41.0

        14 3/4       375

6 5/8 API.

       113.0        51.4

DRILLWELL LTD

Comprehensive Drill Design and Supply Company

Drillwell Ltd
Unit 1-2, Rotherham Close
Killamarsh, Sheffield, S21 2JU
Tel No: 0114 2487333

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