Our Flanges (Carbon Steel Flange HS Code:73079100; Stainless Steel Flange HS Code:73072100) Series is made according to different standard to satisfy various customer’s request: ANSI B16.5、British Standard:BS4504、JIS/ks、DIN2576、Chinese Standard GB、HG、JB Etc。It has rich assortment of Welding Neck（WN）、Slip-On（SO）、Blind Flange（BL）、Threaded Flange（THRE）、Plate Type（PL）Etc. The specification is from 1/2”（DN15）to 160”（DN4000）.Material：Forged Carbon Steel or Casting Steel.