1) Standard: ANSI, DIN,BS, JIS, UNI, etc 2) Material: 304, ... CE and ISO9001. MATERIAL304, 304L, 316, 321, 310S, 1.4301, 1.4372, 1.4319, 1.4401, 1.4845, A105, 20#, Q235, etc(Notes: We can ... ,DIN2576,DIN2628,DIN2630,DIN2631,etc.5. BS Standard flangesEN1092-1: Type 01, Type 02, Type 04, Type 05, Type 11, Type 12 ...