America West Drilling Supply...Where going in the hole makes sense!
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Symmetrix STD System

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Symmetrix STD Drawing

System
Size
Casing OD
(inch)
Casing
Wall Max.
(inch)
Ring Bit ID
(inch)
Ring Bit OD
(inch)
Pilot Bit OD
(inch)
DTH
Hammer
71
4.00
0.22
2.84
4.25
3.51
  
72
3.50
0.13
2.84
3.94
3.17
  
82
4.50
0.24
3.25
4.92
3.98
3"
90
4.50
0.20
3.57
5.04
4.03
3"
98
5.50
0.39
3.89
5.79
4.57
4"
105
5.75
0.31
4.17
5.98
5.04
4"
115
5.50
0.20
4.57
5.94
5.04
4"
126
6.63
0.39
4.98
7.01
5.76
5"
135
6.63
0.22
5.33
7.24
6.08
5"
140
6.63
0.22
5.54
7.24
6.12
5"
142
7.00
0.31
5.57
7.52
6.30
5" - 6"
151
7.63
0.43
5.93
8.07
6.65
6"
155
7.63
0.35
6.14
8.07
6.84
6"
165
7.63
0.24
6.57
8.27
7.09
6"
170
8.63
0.50
6.69
9.13
7.52
6"
185
8.63
0.24
7.32
9.21
8.07
6"
190
8.63
0.20
7.56
9.29
8.11
6"
212
10.00
0.31
8.39
10.55
9.29
8"
218
10.75
0.50
8.61
11.22
9.69
8"
231
10.75
0.31
9.13
11.30
10.04
8"
274
12.75
0.50
10.83
13.35
11.67
8" - 12"
281
12.75
0.31
11.06
13.43
12.03
8" - 12"
300
14.00
0.50
11.73
14.53
12.87
10" - 12"
354
16.00
0.50
13.93
16.54
14.88
10" - 12"
396
18.00
0.50
15.59
18.58
16.93
12" - 16"
445
20.00
0.50
17.52
20.55
18.86
12" - 18"
545
24.00
0.50
21.47
24.49
22.83
16" - 20"
640
28.00
0.59
25.20
28.54
26.65
16" - 20"
738
32.00
0.59
29.06
32.60
30.63
18" - 24"
838
36.00
0.59
32.95
36.61
34.57
20" - 30"

 

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