Standard: API Spec 7-1
Specification: OD 3 1/2", 4 1/2", 5", 5 1/2"
Material: AISI 4145H Alloy Steel and Non-magnetic material
Type: Integral and Friction welded
Usage: HWDP is the transition zone between drill collar and drill pipe. It can not only reduce stress-formation in the connection of drill collar and drill pipe, but also reduce the wear on OD.
Specifications:
Size(in)
|
O.D.(in)
|
I.D. (in)
|
Tool Joint O.D.(in)
|
Tool Joint I.D. (in)
|
Connection
|
Max.elevator diameter (in)
|
Central upset dia.(in)
|
Min.drift dia.size(in)
|
3 1/2
|
3 1/2
|
2 1/4
|
4 3/4
(4 7/8, 5)
|
2 1/4
|
NC38
|
3 7/8
|
4
|
2
|
2 1/16
|
2 1/16
|
1 13/16
|
4
|
4
|
2 1/2
|
5 1/4
|
2 1/2
|
NC40
|
4 3/16
|
4 1/2
|
2 1/4
|
2 9/16
|
2 9/16
|
2 5/16
|
4 1/2
|
4 1/2
|
2 11/16
|
6 1/4
|
2 11/16
|
NC46
|
4 11/16
|
5
|
2 7/16
|
2 3/4
|
2 3/4
|
2 1/2
|
2 13/16
|
2 13/16
|
2 9/16
|
5
|
5
|
3
|
6 5/8
|
3
|
NC50
|
5 1/8
|
5 1/2
|
2 3/4
|
5 1/2
|
5 1/2
|
3 1/4
|
7
(7 1/4,
7 1/2)
|
3 1/4
|
5 1/2 FH
|
5 11/16
|
6
|
3
|
3 3/8
|
3 3/8
|
3 1/8
|
3 7/8
|
3 7/8
|
3 5/8
|
4
|
4
|
3 3/4
|
6 5/8
|
6 5/8
|
4
|
8
(8 1/4,
8 1/2)
|
4
|
6 5/8 FH
|
6 15/16
|
7 1/8
|
3 3/4
|
4 1/2
|
4 1/2
|
4 1/4
|
5
|
5
|
4 3/4
|
Note: When ordering or requesting for quote, please specify the detailed requirements.
|