A Weld Neck Flange is a type of pipe flange designed to be welded to the neck of a pipe or fitting. They have a circular base with a protruding neck, also known as the hub or collar, which extends from the flange's flat face. This is one of the most common types of flanges used in piping systems, known for its high structural integrity and reliability in high-pressure and high-temperature applications. They provide a strong and durable connection between pipes or fittings, making them suitable for critical applications in various industries. Weld Neck Flange is widely used in piping systems where high-pressure and high-temperature conditions are encountered, such as in oil and gas, petrochemical, chemical processing, power generation, and shipbuilding industries.