Lap joint flanges are a specific type of flange used primarily in piping systems where the need for easy assembly and disassembly is essential. These flanges are characterized by their unique design, which involves a lap joint, typically comprising two main components: the flange itself and a stub end. The flange is a flat disc that can be connected to a pipe or another fitting, while the stub end is welded to the pipe and protrudes outwards, allowing the flange to be easily slipped over it. This configuration enables a flexible connection that can accommodate misalignment and thermal expansion, making it ideal for various industrial applications.

One of the primary benefits of lap joint flanges is their versatility in different piping systems. They are particularly advantageous in situations where frequent maintenance or adjustments are required, as the flanges can be quickly removed without the need for significant disassembly of the connected piping. This ease of use is complemented by their ability to handle a wide range of pressure and temperature applications, making them suitable for industries such as oil and gas, chemical processing, and water treatment. The design also minimizes the potential for leaks, as the flange and stub end can be securely mated with the appropriate gasket material.