These are NPT/LP couplings：
1.315" NPT/LP API 5B finished COUPLING;
2-3/8" NPT/LP API 5B finished COUPLING;
3-1/2" NPT/LP API 5B finished COUPLING;
4-1/2" NPT/LP API 5B finished COUPLING.
Mfg. Std ： API 5L & API 5B-2017 16TH Edition
With 100% inspection for each coupling.
Due to a small amount, the goods will be shipped by LCL .And the sailing date will be Sep.12,2022. ETA PUSAN is Sep.14, 2022
Below are the photos taking in the dock.
Post time: Sep-09-2022