standard : ASME,ASTM,ANSI,DIN,JIS,API,MSS,AWWA size : 1/2" ~ 80" material : ,Stainless Steel ... PN16/PN25/PN40, BS10 TABLE E/TABLE DD. Japan standard: JIS/KS 5K, 10K, 16K, 20K, 30KE. Italy standard: UNI2253/2254 ... 5,000.00mm and unit weight is 4,000.00kgs. JIS B2220 20K Blind flange