DN80-2000,K12/K9, PN10,PN16,PN25 ISO2531,EN545/598 BS4772 In factory ,SGS inpection D-flange fitting with ... : cement mortar lining and rich-zinc plus bitumen coating3 Standard: ISO2531, EN545,EN598,BS 4772, ANSI,AWWAC110,C153 ect4 Specification: DN80-2000mm, PN10 ...