Blind Pipe Flange Specifications and Availability

2016 June27

Blind Pipe Flange Specifications and Availability

Blind pipe flanges are high-pressure-capable pipe fittings used at the terminus of pipe systems and the openings of pressure vessels, which is possible since it has a plate with bolt holes and no center hole.

Where are Blind Flanges Used?

Often, they are implemented in liquid/gas flow testing. One of the most profound benefits of blind pipe flanges are that they allow easy pipe access during line maintenance. We are proud to provide blind flanges through their specified range (1/2″ to 96″) and in all sizes and material grades.

Blind pipe flanges are used to blank off pipe ends, pressure vessel openings and valves. They can be safely used in high stress settings due to most of the stress being diverted to center bending.

Blind pipe flanges are usually found in flat face, RTJ facing or raised face provisions, with a standard height of 1/16″ for raised face flanges under 400# and 1/4″ for 400# and over.

What are the Specifications for Blind Flanges?

The flanges are manufactured by Forged Components in any steel material grade, including stainless, alloy and carbon, with many varieties in stock and shipment-ready.

In-stock items include ANSI B16.5, ASME B16.47 Series “A”, ASME B16.47 Series “B” and pressure vessel weld neck. Custom weld neck flanges are available through Coastal Flanges.

Available classes include class 150, class 300, class 600, class 900, class 1500 and class 2500. The flanges are available from 1/2″ to 24″.

Common blind flange markets include chemical, petroleum, marine, paper making, ship building, metallurgy, boiler, electric, power, and natural gas.

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