... Standard:JIS,EN,DIN,ANSI,ASME 4.Type: slip on , blind , WN ,SW--Methodby forging ,forged flange --Pressure Ratingclass 150 300 ... 5K 10K 16K and 20k --Type:plate , slip on , weld neck , blind , threaded , and special mode --PaintingRust preventative oil painting ... ,cast iron ,brass , aluminum standardANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48DIN : DIN2527, DIN2566, DIN2573, ...