Spectacle Blind flange Material :ASTM A105/A350/A694 Standard;ANSI B16.48 Size: 1/2" TO 60" Class:150,300,400,600,900,1500, ANSI B16.48 Carbon steel Spectacle Blind flange Flange Type:Butt Welding Flange, Welded Neck Flange , Slip-on FlangeSocket Welding Flange, Lap Joint Flange, Flat/Plate Flange, Orifice Flange, Threaded FlangeLoose Plate Flange , Steel Pipe Flange , Spectacle Flange, Anchor ...