1. Flat Face Flange
A flat face flange is a flat, annular connector used to connect two pipes. It has a flat top and bottom and is designed to connect to one or more types of pipes, typically using standard threads. Flat face flanges are very common in piping systems and are secured using compressed air, screws, or welding. They are widely used in the aviation, shipbuilding, steel, papermaking, petroleum, and chemical industries.
2. Raised Face Flange
A raised face flange is a raised flange, also known as a "flange." It offers excellent sealing properties and is commonly used in pipelines with large gas or liquid flows. It also provides greater pressure and load-bearing capacity, making it suitable for high-pressure piping systems.
3. Forged Raised Face Flange
Forged raised face flanges are produced through a forging process and generally offer improved mechanical properties, sealing, corrosion resistance, and high-temperature resistance. They are widely used in certain specialized industries.
4. Flange Flange
A flange flange is a flange that connects pipes through a sealing surface. It has a strong load-bearing capacity and is suitable for high-pressure and high-temperature environments. Commonly used in oil, pipeline, chemical industry, shipbuilding and construction.