... )ISO2531,EN545,BS4772 4)Strength,long life 1.Ductile cast iron pipe fitting-Dimantling joint produced according to ISO2531, EN545, ... EN598, AWWA C110.2 and other standards.2. Material: Ductile iron 3. Inside and outside FBE coating ( fusion bonded epoxy coating ... ≥15S≥700≥10 Pa≥10S Mechanical properties: NameTensile StrengthElongationYield StrengthHardnessDuctile iron fittings≥420MPa≥5%≥300MPa≤250HB