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Oil & Gas

Oil & GasCoastal Flange serves a wide range of industries such as oil and gas, water works, and petrochemical. The oil and gas industries utilize pipe flanges for connecting and separating various points in a pipeline for maintenance and repair work. These flanges can also be used for piping containment vessels for heat exchangers and similar apparatuses.

Common industry association flanges used in the oil and gas industry are American Society of Mechanical Engineers (ASME) B16.47/ American National Standards Institute (ANSI) B16.5. These institutions assist in the development and implementation of industry uniformity to ensure the minimum requirements used for safe application. The committees provide standards covering pressure-temperature ratings, materials, dimensions, tolerances, markings, and methods of designating openings for pipe flange and fittings.

Coastal Flange manufactures a wide variety of pipe flanges including weld necks, slip-ons, and blinds in addition to custom designs for special application. Pressure classes for the oil and gas industry are determined based on the pressure and temperature of the application. Pressure ratings include class: 150, 300, 400, 600, 900, 1500, and 2500 in carbon, stainless-steel, and alloy.

Oil and Gas Flanges Explained

Weld Neck Flange

Weld Neck Flange

Weld necks are the most popular flange in service because they allow for single weld attachment of the flange to the pipe. During welding, the transfer of heat is reduced to the stress of the flange face because of the distance of the weld.

Slip-on Flange

Slip-on Flange

Slip-on flanges have a hub that slides over the pipe and requires two weld attachments front and back of the flange. Slip-on flanges have less weight than a weld neck, making a more cost-effective option.

Blind Flange

Blind Flange

Blind flanges are used in the oil and gas industry to cap off a weld neck or slip-on flange to close or seal the pipeline. These flanges are usually purchased solid in combination with a weld neck or slip-on flanges for completion of the pipeline.

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