In the modern industry, flange connection, as a fundamental and critical technology, is widely used for secure connections between pipelines, valves, and equipment. The term "flange" comes from the English word, which literally translates to "edge" or "wing edge." In the industrial field, it typically refers to a disc-shaped metal part used to tightly connect and seal two or more comp... https://www.cttechx.com/news/the-origin-history-of-flange-263159.html