Unlike Welding Neck Flange, Blind Flanges are engineered without a bore. Therefore, these find usage in blanking off the piping ends and openings of pressure vessels and valves. When bolt loading and internal pressure are considered, these type of flanges are larger in size. Bling Flanges come without any standards inner diameter and are an ideal choice for the applications that require higher pressure and temperature. These flanges are not only high on quality but quite affordable.