SO Flange RF,12",300#,ASTM A105/ANSI B16.5 1.Standard:ANSI, DIN, ... Production NameSO Flange RF,ANSI B16.5,UNIT WEI1GHT:5KG12",300#,ASTM A105/ Size1/4''-48'',DN8-DN1200WTSCH5S-XXSStandardANSI B16. ... 's requirementMain Flangeblind raised faced flange,weld neck flange, slip on flange , plate flange , Threaded flange, blind flangeInspection Factory ... Flange RF,ANSI B16.5,UNIT WEI1GHT:5KG12",300#,ASTM A105/