API 5B J55 LTC Casing Coupling

API 5B Coupling
GRADE: J55, K55, N80-1, N80-Q, L80, C90, P110,Q125;
SIZE: Tubing coupling from 1.050" to 4-1/2", Casing coupling from 4-1/2” to 20”;
TYPE: NUE, EUE (tubing coupling), STC, LC, BTC (casing coupling).
SURFACE TREATMENT: Whole phosphating, or inside phosphating and outside coating
PACKING: By carton, wooden case, wooden pallet, or by requirements of customers.
API 5B J55 LTC Casing Coupling