ansi b16.5 welding neck flange 600 1.Resistance to corrosion. 2.Acid and alkali ... High temperature resistant ansi b16.5 welding neck flange 600 Welding Neck Flanges, Slip on Flanges, Threaded Flanges, ... 1/2"-64"2.Materials: stainless steel , carbon steel , nickel alloy ,cast iron ,brass , aluminum 3.class 150 300 600 ... ) to 64” (1200NB) in 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150, ...