OCTG Tubing Coupling
API OTCG Tubing Coupling Standards: API 5CT Processing: Seamless Size: 2 3/8- 4 1/2” Grade: J55, K55, L80, N80, P110 Thread Type: NUE, EUE Test: NDT etc related rules of API 5CT and 5B Surface Treatment: Whole phosphating, or inside phosphating and outside coating API Tubing Coupling Overview OTCG (Oil Country Tubular Goods) is a…