JX Petro Sinker Bars are manufactured from special quality hot rolled carbon manganese steel bars. Sinker bar dimensions and tolerances conform to API Spec. 11B, latest edition and AISI steel products manual. Sinker bars have a reduced section on one end for elevator seating and lifting. Pin blanks are machined and dimensions gauged. Pin threads are rolled cold-formed to strengthen the thread from fatigue. An inhibitor lubricant is applied to each pin and thread protector installed. An oil soluble coating protects sinker bars from atmospheric corrosion in storage. Sinker bars are bundled to prevent handling damage during transportation.
- The threaded joint is designed with bearing surface to make the joint more reliable.
- Hollow structure can be injected with hot oil, vapor. It can also be used for running heating cable.
- High rigidity to bear large torque.
- Decrease the viscosity of the oil and the wax deposit in the well to increase the pump efficiency.
- There are plastic caps to protect the thread of the hollow sucker rod.
- Color painting on the plastic caps is available.
- Metal pallet package for saving space and convenient to transport.
JX Petro sinker bars with several combinations of body diameter and pin size. Some of these combinations are furnished with a Sucker Rod pin and others come with a Polished Rod pin. The table below lists each size of sinker bar. 
