API oil tubing coupling

1.OD: from 2-3/8"- 4 1/2"

2. Grades: J55, K55, N80, L80 P110

3. Thread: BTC STC LTC

API oil casing pipe coupling

1.OD: from 4 1/2"-13-3/8"

2. Grades: J55, K55, N80, L80 P110

3. Thread: BTC STC LTC