API 7-1 Integral Heavy Weight Drill Pipe
Negotiable /Ton
Min.Order:10 Tons
Sinotai Petroleum Equipment Co., Ltd.
The wall thickness of heavy weight drill pipe is between drill pipe and drill collar, its structure is similar with drill pipe. It is made from premium alloyed steel. Its both tool joints and middle upset are welded hard bands. Technical parameters meet with API Spec7-1 Standard.
size | OD | ID | Tool joint OD | Tool joint ID | Thread type | Max. elevator diameter | Central upset diameter | Min. drift diameter size |
3 1/2 | 3 1/2 | 2 1/4 2 1/16 | 4 3/4 (4 7/8, 5) | 2 1/4 2 1/16 | NC38 | 3 7/8 | 4 | 2 2 13/16 |
4 | 4 | 2 1/2 2 9/16 | 5 1/4 | 2 1/2 2 9/16 | NC40 | 4 3/16 | 4 1/2 | 2 1/4 2 5/16 |
4 1/2 | 4 1/2 | 2 11/16 2 3/4 2 13/16 | 6 1/4 | 2 11/16 2 3/4 2 13/16 | NC46 | 4 11/16 | 5 |
|
5 | 5 | 3 | 6 5/8 | 3 | NC50 | 5 1/8 | 5 1/2 |
|
5 1/2 | 5 1/2 | 3 1/4 3 3/8 3 7/8 4 | 7 (7 1/4, 7 1/2) | 3 1/4 3 3/8 3 7/8 4 | 5 1/2 FH | 5 11/16 | 6 |
|
6 5/8 | 6 5/8 | 4 4 1/2 5 | 8 (8 1/4, 8 1/2) | 4 4 1/2 5 | 6 5/8 FH | 6 15/16 | 7 1/8 |
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