Hollow Sucker Rod for PC pump

     The threaded connector and coupling are welded to the two ends of the seamless steel pipe through friction welding to form a small diameter "tubing". The small diameter "tubing" has several advantages as below:

4.1    The hot liquids can be injected into the tubing to heat and extract the heavy oil.

4.2    The underground heavy oil can be heated and extracted by inserting a cable into the tubing.

4.3    The small diameter tubing has high rigidity and strong torque bearing capacity, and can drive the screw pump with strong ability.

4.4    Can be used as API tubing.