... , threaded, Lap-joint, Loose, Flat, Figure-8 Blank, Orifice, etc Dimension Standards and Sizes: GOST 12820 /12821 DIN2527,2573,2576,2544 ... ,2545, 2631, 2632, 2633, 2634, 2635, 2636,2638,2641,2642 / EN1092-1 TYP01-34 ANSI B16.5 1/2”-24” CLASS ... you! Junes XieSKYPE: cnjuneQQ: 2235192007MSN: gloryenergycn MILD STEEL WELD NECK FLANGE RAISED FACE