... ISO9001 and bv stainless steel 180 degree elbow Stainless Steel ElbowStandardASME SA403,BS16.9,GB12459,EN,DIN,JISMaterial304,304L,310S,309S ... ,clamp,union ,valve etc Stainless Steel Flange StandardsASTMA182,ANSI B16.9, ANSI B16.28, EN10253-2, EN1092-1,JIS B2313,DIN2605,Stainless ... Steel Reducer StandardDIN 2527,2573,2576,2642,2633,JIS B2311,ASME 16.9Material304, 304L, 310S, 309S, 316, 316L, 317, 317L ...