1. Flange covers are primarily used for connecting and securing pipes and fittings, maintaining the sealing performance of the pipeline components; they are removable for easy inspection of the pipe condition. 2. The reducing flange cover is resistant to corrosion and acid/alkali, suitable for applications such as water conservancy, electricity, power stations, pipeline fittings, industry, pressure vessels, etc. 3. Stainless steel flange covers are used in industries such as boilers, pressure vessels, petroleum, chemicals, shipbuilding, metallurgy, machinery, and food processing, facilitating the replacement of a section of pipeline. 4. The reducer flange cover is mainly used for connecting motors to reducers and for connecting reducers to other equipment. Weld neck flange covers are used to transfer pressure in pipes, thereby reducing high stress concentration at the flange base.