Application of sinker bar to the rod string minimizes compression generated on rods during the pumping down stroke. You can use more than one sinker bar in your installation to gain additional weight if required by the deeper settings of your string of rod. We offer Grade 2 (alloy): AISI 5140 sinker bar to customers.

We offer Grade 2 (alloy): AISI 5140 sinker bar to customers and the available sizes are 1- 1/4”, 1 -1/2”, 1- 3/8”, 1- 5/8”, 1- 3/4”. It is strictly comply with the API Spec. 11B.

Key benefits

1.     Create constant tension in the rod string when the sinker bar placed at bottom of the rod string;

2.     Eliminates compression on the rod string, reduce the amount of fatigue failures and the chances of buckling;

3.     Reduction in rod and tubing wear if including sinker bar in the rod string.

 

Chemical Composition
Steel	AISI 5140
C	0.37~0.44
Si	0.17~0.37
Mn	0.50~0.80
Cr	0.80~1.10

Mechanical Properties
Minimum Tensile Strength, PSI	90,000
(MPa)	(620)
Rod Size, OD	11/4″; 13/8″; 11/2″; 15/8″; 13/4″
(mm)	(31.75);(34.93);(38.1);(41.28);(44.45)
Rod Length	25’, 30’ (+/- 2.0″per API requirement)
(m)	(7.62), (9.14) (+/- 50.80mm per API requirement)

*The above values are for general information only. We reserves the right to modify them according to internal specifications and without prior notice.