... Flanges,Slip-on Flange,Welding Neck Flange,Threaded Flabge,Socket Welding Flange,Blind Flange,Butt Welding Ring Loose Flange,Flat Welding Ring Loose Flange,etc. Item#LJF001 ... 6,10,16,25, 40,64,100,160 ETC. Available with NACE MR 01-75 material stainless steel , carbon steel , nickel ...