API Couplings are brief items of casing or tubing utilized as a sort of link in between the specific joints. They are usually made from the exact same quality of steel as the casing or tubing.
The Coupling of pipe should be seamless according to National Standard. The grade, type and heat treatment should be the same with the pipe.
Specification
Standard: API 5CT & 5B
Steel Grade: H40, J55, K55, N80, R95, L80, C90, T95, P110, Q125
Dimension: Tubing coupling from 2-3/8″ to 4-1/2″, Casing coupling from 4-1/2″ to 20″
End finish: NUE, EUE (tubing coupling); STC, LTC, BTC (casing coupling)
Colors: J55/ K55-Bright Green, P110-White, N80/ L80-Red etc
PACKING: by wooden cases, wooden pallet, or as per customer request
