... , 314.316 Type:Slip On Flange, Welding Neck Flange, Socket Welding Flange, Threaded Flange, Lap Joint Flange, Blind Flange and other kinds of special flanges ... ,B30Special steel:N06600,N08800,N08811,Titanium alloy, Alloy steel etc.Carbon manganese steel:20# / Q235B / A105,16Mn,F11,F13Size: ... forging from round bar,CNC machining,Drilling and Passivating high quality Stainless steel flange, 150~1500class