Common Types of Forged Flanges

Industrial forged flanges are essential components in various piping systems, used to connect pipes, valves, pumps, and other equipment. Here are some common types of industrial forged flanges:

Weld Neck Flanges: Recognized by their long tapered necks, weld neck flanges are welded to the pipe. The tapering neck provides strength and supports the flange, reducing stress concentration at the base of the flange. They are ideal for high-pressure and high-temperature applications.

Slip-On Flanges: These flanges are slipped over the pipe and then welded in place. They are easier to align compared to weld neck flanges and are typically used in lower-pressure applications.

Blind Flanges: Used to seal the end of a piping system or opening, blind flanges do not have a bore and are used to terminate the flow of a pipeline. They are typically used for inspection or cleaning purposes.

Socket Weld Flanges: Designed with a socket into which the pipe fits, these flanges are welded around the outer diameter to create a smooth bore and better fluid flow. They are commonly used in smaller pipe diameters and high-pressure applications.

Threaded Flanges: These are attached to the pipe without welding, making them suitable for low-pressure applications or in places where welding is hazardous. They are screwed onto the pipe, which must be threaded.

Lap Joint Flanges: Consisting of two components, a stub end and a flange, lap joint flanges are used with stub ends and are ideal for systems that require frequent dismantling for inspection and cleaning.

Orifice Flanges: Used in flow metering systems, such as a flow orifice plate, they are typically used in conjunction with orifice meters to measure the flow of liquids and gases.

Ring Type Joint (RTJ) Flanges: These have a groove cut into their face to accept a steel ring gasket, which allows for high pressure and temperature sealing.

Each type of industrial forged flange serves a specific purpose and is chosen based on the requirements of the piping system, such as the pressure, temperature, and the medium being transported.