... . 5. Best service 1.NameStainless steel flanges 2.Standard: GB14976-2002, GB13296-2007, JIS, AISI, DIN, EN3.Size: 1/2" - 84"DN10 ... : ND6-ND100 (DIN), PN6-PN100 (UNI, EN1092-1), 5K-30K (JIS), 150lbs-2500lbs (ANSI)5.Section Shape:RF, FF, MF, MFM ... .Reasonable price.3.Excellent quality.4.Various size. AISI,ASTM,JIS,DIN,EN Stainless steel flange