oilfield coupling
1.O.D: 2-3/8"-20"
2.Grade:J55 K55 N80 P110 ect
3.Thread :specail thread
4.Standard: API 5CT
tubing coupling
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oilfield coupling
1.O.D: 2-3/8"-20"
2.Grade:J55 K55 N80 P110 ect
3.Thread :specail thread
4.Standard: API 5CT