Di pvc fittingsductile iron pipe fittingstandard:iso2531en545en598pressure:pn10pn16pn25pn40body material:ductile ironcoating:a). Inside and outside with fbe ( fusion bonded epoxy) coating or epoxy painting;b). Inside and outside with epoxy painting;c). Inside and outside wih black bitumen.Gaskets are sbr, nbr or epdm;package:wooden cases and protection layer.