Heavy Weight Drill Pipe

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  Heavy Weight Drill Pipe Specifications*
Outside Diameter,
in.
Inside Diameter,
in.
Connection
Tool Joint OD ,
in.
Tool Joint ID ,
in.
Center Upset
Diameter, in.
3-1/2
2-1/4
NC38
4-3/4 (4-7/8, 5)
2-1/4
4
2-1/16
2-1/16
4
2-1/2
NC40
5-1/4
2-1/2
4-1/2
2-9/16
2-9/16
4-1/2
2-11/16
NC46
6-1/4
2-11/16
5
2-3/4
2-3/4
2-13/16
2-13/16
5
3
NC50
6-5/8
3
5-1/2
5-1/2
3-1/4
5-1/2FH
7 (7-1/4, 7-1/2)
3-1/4
6
3-3/8
3-3/8
3-7/8
3-7/8
4
4
6-5/8
4
6-5/8FH
8 (8-1/4, 8-1/2)
4
7-1/8
4-1/2
4-1/2
5
5

   *For both integral and welded heavy weight drill pipes.
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