FLANGE WN RF ASTM A105 SCH 40 1.Standard:ANSI, DIN,JIS, BS ... ,alloy steel,Aluminum steel Description of Flange:Production NameFLANGE WN RF ASTM A105 SCH 40Size1/4''-48'',DN8-DN1200WTSCH5S-XXSStandardANSI B16 ... flangeInspection Factory in-house or Third Party inpection FLANGE WN RF ASTM A105 SCH 40