DIN Flange Size:1/2"-60" Material:carbon steel and alloy Standard:ASTM,DIN,JIS.BS, Cert:ISO,TUV,AD,PED,API. DIN Standard ... Statinless Steel Flange1. Type: ... on flange, socket welding flange, blind flange2. Material: Stainless steel, carbon steel,alloy steel---20#, A105, Q235A, 331, 304, 304L, 316, 316L ...