... fitting--Flange Adapter 2)Class K12,PN10/16/25/40 3)ISO2531,EN545,BS4772 4)Strength,Durability,Saf 1.Ductile cast ... iron pipe fitting--Flange Adapter produced according to ISO2531, EN545, BS4772, EN598 ... , AWWA C110.2 and other standards.2. Material: Ductile iron 3 ...