... , cross, pipe holder, manhole cover, stub,clamp,union ,valve etc Stainless Steel Flange StandardsASTMA182,ANSI B16.9, ANSI B16.28, EN10253-2, EN1092-1,JIS B2313,DIN2605,Stainless Steel 304 ... B2311,ASME 16.9Material304, 304L, 310S, 309S, 316, 316L, 317, 317L, 321201, 202, TechniqueForgedSizeDN15~DN1200 (1/2''~48'')ThicknessSCH5~XXSOur company certificate:contact way:stainless steel elbow ...