Ductile iron pipe fittings to ISO2531 / BS4772 / EN545 Ductile iron pipe fittings:Dimensions standard: ISO2531: 50-1000mm, PN10/16BS4772: 50-1000mm, PN10/16EN545: 50-1000mm, PN10/16Connecting mode:FlangedSocketedMechanical connectionLoose flangedCoatings: Inner lined with cement and outside coated with zinc plus bitumenInner and outside coated with epoxy resinInner and outside coated with fusion ...