A threaded pipe cap is a threaded pipe fitting mainly used in piping systems to close the end of a pipe or as a connecting component. Threaded pipe caps are usually installed at the end of pipes to prevent dust and impurities from entering the interior of the pipe, or are used to temporarily seal pipe ports. Threaded pipe caps are widely used in various industrial fields, including petroleum, chemical industry, natural gas, hydropower, etc. They are often used during the installation and maintenance of pipeline systems to ensure the integrity and safety of the pipeline system.