1.standards:ISO2531, ISO4422, EN545 , EN598 , BS4772 , AWWA C110 ; 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 ...