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: welding neck flange ... , lap joint flange, thread flange, slip on flange, socket welding flange, blind flange2. Material: Stainless steel, carbon steel,alloy steel---20#, A105, Q235A ...