BLRF BLRF BLRF ASTM A105 Blind Flange ASTM A105 Blind Flange ASTM A105 Blind Flange 1500 LB Blind Flanges 1500 LB Blind Flanges 1500 LB Blind Flanges Carbon Steel Blind Flanges Carbon Steel Blind Flanges Carbon Steel Blind Flanges 19 6 月, 2019 What is Raised Face Blind Flange ASTM A105 is representative material for carbon steel blind flange which are available in Raised Face ( RF ) , Ring Type Joint ( RTJ ) and Flat Face ( FF). Knowledge