... '' 2.Standard: BS ANSI DIN standard 3.Certificate: ISO 9001:2008 4.Surface: black, g screwed half couplingBS Standard Electric Steel Female ... , CLASS CSurfaceHot Dipped Galvanized, Electro Galvanized, Natural finished, Chemical blackThreadsDIN, BS, NPT, Metric, BSPT, BSP, NPS (ISO7/1, DIN 2999, ANSI ...