... EN1092-1:2007 PN6-PN400, GOST PN6-PN1004. Standard: ANSI B16.5, DIN, JIS B2220, EN1092-1:2007, GOST12820, ... 304H, WP316/316L/316H, WP321, WP347/347HSTANDARDANSI B16.9, ANSI B16.28, DIN2605/2615/2616/2617, JIS2311/2312/2313, ... F304/304L, F316/316L, F321, F347STANDARDANSI B16.5, ANSI B16.47, DIN2573/2576/2501/2502/2543, DIN2631/2632/ ... /2633/2634/2635,DIN2565/2566,DIN2527 welded neck flange/forged flange