2024-08-01
API Casing Couplings and Tubing Couplings
Couplings are used to hold the neighboring joints together during axial tension or compression.The common oilfield API-5CT casing couplings include J55, K55, N80 and P110 in accordance with API 5CT/5B, can be classified as STC (short thread), LTC (long thread) BTC (buttress thread) and premium connections.