Specification
Size:4-1/2"~ 30";
Thread:LC,SC,BC,RT—BC,100%replace premium connection,forexample:Vamand Hunting;
Grade: All grade of APl;
Sucker Rod Couplings for Sucker Rod and Polished Rod
Screw Pump Special Sucker Rod
High-strength Sucker Rod
Sucker Rod
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