1.standards:ISO2531,ISO4422,EN545,EN598,AWWA C110, BS4772; 2.size:DN80-DN2600mm; 3.material:ductile iron. Ductile Iron Pipe Fitting 1, Standards : ISO2531, ISO4422, EN545 , EN598 , BS4772 , AWWA C110 . 2, Material : GGG500-7 or other Ductile iron . 3, Coating : fusion bonded epoxy coating ; cement lining inside and zinc primer and bitumenpainting outside ; bitumen painting inside and outside ; ...