Views: 25 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).
The ASME B16.47 standard includes flange types: butt welded flange (WN FLANGE) and blind flange (BL FALNGE).
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.
