... , Blind Flange Socket Welding Flange, Alloy flange,Plate Flange 4" stainless steel exhaust flange ANSI Flange Size:1/2" ~ 64"(DN15 mm ... 5K, 10K, 16K and 20K ANSI Flange Materials: Carbon steel, Stainless steel and Alloy steel etc. Market: America, Europe, Korea, South ... time. Any inquiry will be replied within 24 hours. 4" stainless steel exhaust flange