large diameter different types of flanges

large diameter different types of flanges Specifications Standard:(forged flange) ANSI,JIS,DIN,BS4504,SABS1123,EN1092-1, UNI,AS2129,GOST-12820 Type: Plate,Slip-on,Welding Neck.Thread,Socket weld,Blind Size: 1/2-78 inch (DN15-DN2000) Material Carbon steel: A105,SS400,SF440 RST37.2,S235JRG2,P250GH,C22.8 Stainless Steel: F304 F304L F316 F316L 316Ti Surface treatment Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint,Zinc, Hot dipped Galvanized. Inspection: factory in-house