stainless steel pipe fitting elbow size:1/2"-80" material:stainless steel certificate:ISO9001 and bv stainless steel pipe fitting elbow Stainless Steel ElbowStandardASME SA403,BS16.9,GB12459,EN,DIN,JISMaterial304,304L,310S,309S,316,316L ... union ,valve etc Stainless Steel Flange StandardsASTMA182,ANSI B16.9, ANSI B16.28, EN10253-2, EN1092-1,JIS B2313,DIN2605,Stainless Steel 304, 304L, 310S, 309S, 316 ...