... , 304, 304L, 316, 316L, 317, 317L,310s etc3) Standards: /ASTM/ASME/DIN/JIS and etc 4) Applications range: for use in the ... #grade321, 304, 304L, 316, 316L, 317, 317L,310s,904L etc.standardASTM/ASME/DIN/JIS and etccertificateISO,SGS,and third part inspection. 304 Stainless steel flange