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When ordering short drill pipe , please specify:
Outside Diameter,Inside Diameter,Steel Grade,Length,Internal Coating Material
Outside Diameter,Inside Diameter,Steel Grade,Length,Internal Coating Material
The Main Technical Specification of Spiral Drill Collar |
||||
O.D. |
I.D. |
Connections |
||
inch |
mm |
inch |
mm |
|
4-1/8 |
104.78 |
2 2-1/4 |
50.80 57.15 |
NC31,NC35 |
4-3/4 |
120.65 |
2 2-1/4 |
50.80 57.15 |
NC35, |
6-1/4 |
158.75 |
2-1/4 2-1 3/16 |
57.15 71.44 |
NC46(4 IF) |
6-1/2 |
165.1 |
2-1/4 2-1 3/16 |
57.15 71.44 |
NC46(4 IF) |
7 |
177.8 |
2-1/4 2-1 3/16 |
57.15 71.44 |
NC50(4 1/2IF) |
8 |
203.2 |
2-1 3/16 3 |
71.44 76.20 |
6 5/8REG |
9 |
228.6 |
2-1 3/16 3 |
71.44 76.20 |
7 5/8REG |
9-1/2 |
241.3 |
3 |
76.20 |
7 5/8REG |
10 |
254 |
3 |
76.20 |
NC70 |
11 |
275.4 |
3 |
76.20 |
NC77 |