... , Electro Galvanized, Natural finished, Chemical blackThreadsDIN, BS, NPT, Metric, BSPT, BSP, NPS (ISO7/1, DIN 2999, ANSI B1.20.1)DimensionBS ... , ITS, BSI,Hebei, ChinaSuccessful caseS.A. World Cup Gym Supplier BSP Thread Galvanized Carbon Steel Socket Coupling