Good price Anti- eccentric wear Sukcer rod coupling We have advanced technology, in particular, a two-way protection againsteccentric wear pumping coupling of anti-wear alloy coating technology, a world leader. Sucker rod coupling is one of our flagship products. One sucker rod coupling must be processed by a few fabrication procedures, such as, Blanking, drilling hole, boring hole, milling, thread tapping, and so on. At the last step, do the surface treatment. The surface treatment includes black coating, phosphating or per the customers' requirments. Besides, it has good anticorrosion and anti-friction property. The following table shows the related information about the sucker rod coupling. Specifications of Pump Rod Coupling Type …