A flange cover, also known as a Blind Flange, is a solid circular flange with no bore in the center. It is mainly used to block the end of pipelines, isolate equipment outlets, or serve as a temporary seal during system pressure testing and maintenance. The products cover the European standard system (PN series) and the American standard system (CLASS series). Types of sealing faces include Raised Face (RF), Male and Female Face (MFM), Tongue and Groove Face (TG), and Ring Joint Face (RJ). Available materials include stainless steel, duplex steel, alloy steel, and special metals such as titanium and Hastelloy. Featuring reliable sealing and easy assembly and disassembly, they are widely used in industrial piping systems for petroleum, chemical, power, pharmaceutical and other industries.