Slip-on flanges are a type of flange used in piping systems to connect two sections of pipe. They are designed to slide over the pipe's end, allowing for easy alignment and installation. Once positioned, the flange is welded to the pipe, providing a secure and leak-proof connection. These flanges are commonly made from materials like carbon steel or stainless steel and are available in various sizes and pressure ratings. Their simplicity and ease of use make them a popular choice in industries such as oil and gas, water treatment, and chemical processing.