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ASME B16.5 VS ASME B16.47

Views: 14     Author: Site Editor     Publish Time: 2023-10-27      Origin: Site

ASME B16.5 and ASME B16.47 are both producing standards of flanges for the size and pressure rating difference .The differs contain:

The main difference between ASME B16.5 and ASME B16.47 is that they cover different flange size ranges.


STANDARD ASME B16.5 ASME B16.47
SEALING FACE RF , RTJ , FF RF,RTJ
SIZE RANGE 1/2"- 24" / DN15 – DN600 26"-60"/DN650-DN1500
PRESSURE RATING
Class 150, 300, 600, 900, 1500, 2500lb

A:Class150,300,400,600,900

B:Class75,150,300,400,600,900

MATERIAL
Carbon Steel, Alloy Steel, Stainless Steel Carbon Steel, Alloy Steel, Stainless Steel

The flange types produced by ASME B16.5 and ASME B16.47 are different.

The ASME B16.5 standard includes flange types:

Butt welded flange (WN FLANGE),

Flat welded flange (SO FLANGE),

Socket flange (SW FLANGE),

Threaded flange (TH FLANGE),

Blind flange (BL FLANGE),

Loose flange (LAPJ FLANGE).

ASME B16.5 TYPE OF FLANGE

The ASME B16.47 standard includes flange types: butt welded flange (WN FLANGE) and blind flange (BL FALNGE).

ASME B16.47 Dimensions of Class 150 Series A Flanges

The ASME B16.47 standard is also divided into series A and series B.

The A series specifies the flange size for ordinary flanges, while the B series specifies the flange size for compact flanges.

The diameter of bolt holes on A series flanges is larger than that on B series flanges, and the number of bolt holes is less than that on B series flanges. The size of bolt holes of the B series flange are smaller than those of the A series flange, and the number of bolt holes is more than that of the A series flange.

Whichever choosing ASME B16.5 standard flanges or ASME B16.47 standard flanges, it is necessary to confirm the exact producing standard based on the specific application of the pipeline system.





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