1.we supplyflange 2.OD:1"~20", Thk:3mm~50mm 3.quality: ISO 9001:2000 4.market:middle east,southern America ... :1/2"-64" 2.Materials:stainless steel or carbon steel 3.Standard:JIS,EN,DIN,ANSI,ASME 4.Type: slip on ... neck , blind , threaded , and special mode--PaintingRust preventative oil painting or back /yellow/ varnish painting or galvaizingItem#FL25 Namesteel din forged flange Range ...