What is ASME B16.47 Series B Class 400 Blind Flange?
ASME is an American standard specification and the B16.47 is for larger diameter flanges; for flanges over 24NPS nominal pipe size. The sizes range from 26NPS to 60NPS. The flanges are piping components that connect two pieces together. Flanges are preferred because they have bolts and nuts to make the connection easier, and they are much easy to remove when necessary. There are series A and series B flanges, with pressure classes such as ANSI B16.47 Series B Class 400 Flanges which have medium-level pressure capacities.
ASME B16.47 Series B Class 400 Blind Flange dimensions, weight and specification
View Sr B 400# BLRF flange dimension in mm
How to test the performance of Sr B 400# BLRF Flange?
B16.47 400# Series B BLRF Flange is meant to withstand the pressures according to the pressure class specification. To make sure of this, the flange can be tested for its capacities. Hydrostatic, ultrasonic, yield, tensile, and other tests are available to chek these properties. The radiography test iis also available on B16.47 Series B cl400 Blind Flanges to check the even distribution of the raw material, the absolute surface roughness and other parameters. By checking these, a customer can be satisfied that the products are up to the standard. The ASME B16.47 Series B Class 400 Blind Flange can also be visually inspected for any defects. The customer can request the supplier for any additional tests as well.
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How to choose the Right Series B 400 LBS BLRF flange Size in oil and gas industry?
ASME B16.47 Cl 400 SR B Blank flange come in sizes ranging from 26 NPS to 60 NPS according to the specification. However, the dimensions can be chosen differently for flanges above 40 NPS in size. The best way is to look at the table for dimensions and select according to the application requirements. The ANSI B16.47 Series B Class 400 Blind Flanges have specific number of bolt holes, outer diameters, and wall thicknesses for each nominal pipe sizes.
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Where are Ss ANSI B16.47 Series B Class 400 Blank Flanges used?
ANSI B16.47 Series B Class 400 Blank Flanges are used in applications where pressure and temperature requirements are medium. Medium pressure operations in the oil and gas industry are the most places where the flanges are used. Power generation, water lines, food processing, chemical processing, pharmaceuticals are some other applications where the ASME B16 47 Class 400 Series B Blrf Flange is used.
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What is the Series B 400 LBS BLRF flange testing procedure?
ANSI B16 47 Series B Class 400 Blank Flanges can be put under a tensile machine to stretch them out to the point where they break. This reveals the force taken to do so and the tensile strength is calculated. The hydrostatic test involves sealing the ANSI B16.47 Series B Class 400 Blind Flange with the tester and then increasing the pressure up to 60% of the tensile strength. This will reveal the conditions of the flanges. The ultrasonic test involves sending ultrasonic waves on the surface and detecting them. If the waves reflect abruptly, outside the expected spectrum, it reveals that the surface is not evenly distributed; of the absolute surface roughness is higher than expected.
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What are the advantages and disadvantages of B16.47 400# Series B BLRF Flange?
ASME B16 47 Series B Class 400 Blind Flange seals up a connection so that the fluid flow is shut down completely. It is easier to access when needed to open the pipe. Opening and closing the line is easier with the bolts and nuts. However, if there is a torque or turbulence in the system due to the different dynamics of the fluid, it can affect the integrity of the bolt and nut connection. They tend to loosen over time, or a gap between the gaskets and the flange face develops. Blind flanges are good for operations that have regular closing and opening of the pipelines.