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| Drill Pipe >> Heavy Weight Drill Pipe |
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Spec
（in） |
Drill Pipe |
Tool Joint |
Weight of Single Piece |
External
D
（mm） |
Internal
d
（mm） |
Thickened |
External D
（mm） |
External D
（mm） |
Internal
d
（mm） |
Diameter of Bevel
DF |
| Central |
End |
| 3-1/2 |
88.9 |
54.2 |
116.3 |
98.4 |
NC38 |
127 |
55.6 |
116.3 |
312 |
| 4 |
101.6 |
65.1 |
114.3 |
106.4 |
NC40 |
133.4 |
68.3 |
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| 4-1/2 |
114.3 |
69.9 |
127 |
119.1 |
NC46 |
158.8 |
73 |
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| 5 |
127 |
76.2 |
139.7 |
130.2 |
NC50 |
168.3 |
77.8 |
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| 5-1/2 |
139.7 |
92.1 |
152.4 |
144.5 |
5-1/2FH |
184.2 |
88.9 |
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