DN80-2000mm,PN10,PN16,PN25,K12 Lined with cement mortar, rich zinc plus bitumen coating ISO2531,EN54,BS EN598, BS4772. spigot flange pipe for ductile iron pipeDN80-2000mm,PN10,PN16,PN25,K12Lined with cement mortar, rich zinc plus bitumen coatingISO2531,EN54,BS EN598, BS4772. spigot flange pipe for ductile iron pipe