OCTG Casing Coupling
OTCG Casing Coupling Standards: API 5CT Casing Couplings Processing: Seamless Size: 4 1/2- 10 3/4” Grade: J55, K55, L80, N80, P110 Thread Type: STC, LTC, BTC Test: NDT etc related rules of API 5CT and 5B Surface Treatment: Whole phosphating, or inside phosphating and outside coating API Casing Coupling Overview OTCG (Oil Country Tubular…