... ,DIN2631 DIN2632,DIN2633,DIN2634,DIN2635,DIN2636,DIN2637 DIN2638,DIN2673JIS:B2220 EN: 1092-1:2001 GOST:GOST12820-80,GOST12836-67,GOST12821-80,GOST12821-80 ... Flange, Slip-On Flange (SO), Socket Welding Flange, Lap Joint Flange (LJF), Welding Neck Flange (WNF), Blind Flange, Orifice Flange, Reducing Flange, Pad Type Flange, Loose Hubbed Flange, Welding Plate Flange ...