... steel couplingsBS DIN ANSI Standard Carbon Steel Mild Steel Couplings screwed half couplingMaterialCarbon steel, Stainless steel, Alloy ... Strength ≥ 320N/mm2 Yield Strength≥ 195N/mm2Elongation ≥20%Hydraulic TestWorking Pressure: Max 1.5MPaTest Pressure: Max 2. ... standard, American standard and DIN standard Kinds of mild steel couplings : bends, elbows ,tees, crosses, sockets, caps, backnuts, ...