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Expander Flange

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An Expander Flange is a type of welding neck pipe flange used to increase pipe size at the flange connection (see sketch).

The Expander Flange is normally referred to as the high hub flange. It is designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the flange.

An Expander Flange is a type of welding neck pipe flange used to increase pipe size at the flange connection (see sketch). Expander flanges are also known as a cost effective alternative to using a separate reducer-welding neck flange combination.

Expander Flange
Expander flanges are also known as a cost effective alternative to using a separate reducer-welding neck flange combination. The expander flange is available in a range of sizes and materials.

An expander flange is similar to a weld neck flange but with the hub expanding to a larger size (one or two sizes). If you have limited space or just need to connect to a larger pipe size, it provides a convenient way for equipment, pumps and valves. It can replace the use of a flange and reducer. Pressure ratings and dimensions are in accordance with ANSI/ASME B16.5.

Dimensions of Expander Flanges



It’s compact size saves space when compared to a reducer-welding neck flange. This flange has a raised face.

Only one butt-weld is needed to install the Expander Flange Very cost effective and competitively priced.

Applications Of Expander Flanges
The expander flange can be used to connect pipe to pumps, compressors and Valves.

Expander Flanges are used in Chemical and petrochemical processing.
Expander Flanges are used in electronics. Expander Flanges are used in processing equipment for maintaining product purity in handling foods, synthetic fibers.
Expander Flanges are used in marine and offshore engineering.
The expander flange is available in a range of sizes and materials.
Packing:

At HT PIPE will be special Expander flanges with plastic cover to ensure the integrity of sealing surface. Bubble bag, then put in to export wooden neatly in to products during transportation to prevent bumps , scratches and other situations encountered or as per customer requirement.

Surface Treatment:

Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint,Zinc,Hot dipped Galvanized.