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 ... , EN1092-1,JIS B2313,DIN2605,Stainless Steel 304, 304L, 310S, 309S, 316, 316L, 317, 317L, 321, 201,etc.Carton Steel ST35, RST37, S235JR, Q235 ...