They are all designed in accordance with API Specification, and manufactured with high quality carbon steel or alloy steel. There is the same external thread on both ends. According to the standard, sinker bar can be divided into two grades: Grade 1 and Grade 2. It can be connected to the polished rod on the upper end or to the sucker rod on the lower end during use.
|
Specifications （in） |
Diameter of rod （mm） |
Diameter of thread （ft） |
nominal diameter of the thread（in） |
Length of thread（mm） |
Thread minor diameter taper |
||
|
1 |
25.4 |
30 25 24 16 |
15/16 |
28.58 |
9° |
||
|
1 Upset |
15/16 |
1-1/16 |
31.75 |
36.5 |
|||
|
1-1/8 |
28.6 |
15/16 |
1-1/16 |
34.93 |
|||
|
1-1/8Upset |
1-3/16 |
1-3/8 |
41.28 |
47.63 |
|||
|
1-1/4 |
31.8 |
1-3/16 |
34.93 |
||||
|
1-1/4 Upset |
1-3/8 |
1-9/16 |
47.63 |
53.98 |
|||
|
1-1/2 |
38.1 |
1-3/8 |
44.45 |
||||
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