... thread 2) Made by seamless steel pipes 3) Size from 1/8"- 6" 4)Surface:black.galv Steel Socket Merchant Coupling Galvanized ... Chemical blackThreadsDIN, BS, NPT, Metric, BSPT, BSP, NPS (ISO7/1, DIN 2999, ANSI B1.20.1)DimensionBS EN10241, ASTM A733, DIN2982TypeFull length,half ... time.It is our honor to develop the business relationship and friendship with your esteem company for long terns basis 1/8''-6 ...