... steel couplings 1.Size: 1/8''-6'' 2.Standard: BS ANSI DIN standard 3.Certificate: ISO 9001:2008 4.Surface ... CLASS CSurfaceHot Dipped Galvanized, Electro Galvanized, Natural finished, Chemical blackThreadsDIN, BS, NPT, Metric, BSPT, BSP, NPS (ISO7/1, DIN 2999 ... Strength ≥ 320N/mm2 Yield Strength≥ 195N/mm2Elongation ≥20%Hydraulic TestWorking Pressure: Max 1.5MPaTest Pressure: Max 2.5MPaTemperature:- ...