Flanges facing

[Melimelo]

Hello everybody,

I would like to know what is ASTM A105 and what does RJ and RF facing mean for a flange?
Also what does the RJ and RF letters mean?
For example, I found out that the type WN means Weld Neck...

Sorry for my bad English and mistakes...
Méli )

 

[pennpiper]

For flanges;
RF = Raised Face
RJ (or RTJ) = Ring Joint (or Ring Type Joint)
SO = Slip On

You should read this article:

http://www.pipingdesigners.com/Training - section 1d.htm

 

[JLSeagull]

ASTM A 105 is a common specification for carbon (0.35% max) steel forgings and piping applications including pressure containing parts, flanges, valves, etc. See the ASTM web site for a list of their standards. You may also find many ASTM specifications as incorporated by ASME with the same number preceded by S such as SA 105. Also refer to ASME B16.5 for flanges through nominal pipe size 24.

 

[Melimelo]

Hi,
Thank you very much for both of you!
This forum looks very nice.
Thanks again!
Méli