cast iron flange 1.Standards:ISO2531,EN545,EN598,BS4772 2.Material:GGG500-7 3.Coating: Fusion bonded epoxy coating;cement lining inside and zinc and bitumen coating outside; Zinc+bitumen inside and outside. 4.Package:Wooden cases or pallets 5.Accessories:Gaskets,bolts and nuts 6.Epoxy resin coating 5015/5005/3019