... couplings 1.Size: 1/8''-6'' 2.Standard: BS ANSI DIN standard 3.Certificate: ISO 9001:2008 4. ... /A106, ST37-2EN10241, BS1387, ISO7-1,DIN2999, DIN2986SpecificationFull socket, Half socketSurfaceHot dipped galvanized,Cold galvanized, BlackSize1/8"---6" ... CLASS CSurfaceHot Dipped Galvanized, Electro Galvanized, Natural finished, Chemical blackThreadsDIN, BS, NPT, Metric, BSPT, BSP, NPS (ISO7/1, DIN ...