... steel 3.Standard:JIS,EN,DIN,ANSI,ASME 4.Type: slip on , blind , WN ,SW--Methodby forging ,forged flange --Pressure Ratingclass 150 ... PN25 PN40 PN64JIS 5K 10K 16K and 20k --Type:plate , slip on , weld neck , blind , threaded , and special mode --PaintingRust preventative oil ...