Casing coupling
Specification
Size:4-1/2"~ 30";
Thread:LC, SC, BC, RT—BC, 100%replace premium connection, forexample:Vamand Hunting;
Grade: All grade of APl;
Tubing coupling
Specification
Size::1.315"~4-1/2";
Thread: NU、EU、100% replace premium connection, for example: Vam and Hunting;
Grade: All grade of API