Buffalo Flange, Inc.

Buffalo Flange has been providing for our customer's quality steel forged flange needs since 1976. Buffalo Flange is headquartered in Houston, Texas and we supply flanges for companies in the United States and internationally. Buffalo Flange has a vast inventory of stock flanges and the capabilities to produce custom flanges to your specifications. To help you understand a little more about the different types of flanges, we've put together the following glossary of terms common to the flange industry:

Glossary

Flange: A ring or collar, usually provided with holes for bolts, and screwed or welded over the end of a tube or pipe to permit other objects to be attached to it. Flanges are often used in plumbing, pipelines and construction zones.  Flanges are very useful because they can be adapted to the needs of a project.

Anchor flange: Anchor flanges are used to anchor pipe, often when crossing streams or ravines. Anchor flanges support the pipeline and resist loading. These flanges are used at crossings and points with changes in pipeline direction. Anchor flanges are known for their axial thermal expansion.

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Axial thermal expansion: When referring to anchor flanges, means the axial thrust of the pipeline. The assumed design temperature change is 90 degrees Fahrenheit. The thrust is transferred to the anchor foundation –in which the anchor is mounted.

Expander flange: A type of welding neck pipe flange used to increase pipe size at the flange connection.

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Lap joint flange: A specialty flange that are used with a corresponding stub-end that is inserted into the inside of the flange. The number one feature and advantage of lap joint flanges is that they have superb manueverability.

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Reducing flange: A specialty flange most commonly used fitting together different sized pipes.

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DIN flange: A DIN flange is a pressure flange that meets European standards that differ from ANSI / ASME standards.

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Split flange: A specialty flange that is made up of two interlocking pieces that fit securely together using nuts and bolts or welding it into place. Split flanges are easily installed on pre-existing piping.

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Chrome Molybdenum: A strength steel alloy. Alloying components are Chromium and Molybdenum.