1. Flange covers are primarily used for connecting and securing pipelines and fittings, ensuring their sealing performance; they are removable for easy inspection of the pipeline condition. 2. The eccentric flange cover is resistant to corrosion and acid/alkaline, suitable for applications such as water conservancy, power, power stations, pipeline accessories, industry, pressure vessels, etc. 3. Stainless steel flange covers are used in industries such as boilers, pressure vessels, oil, chemicals, shipbuilding, metallurgy, machinery, and food processing, facilitating the replacement of a specific section of pipeline. 4. Gearbox flange covers are mainly used for connecting motors to gearboxes and for the connection between gearboxes and other equipment. Welding flange covers are used to transfer pressure in pipelines, thus reducing high stress concentration at the flange base.