A694 F65 flanges manufactured to ASME B16.5
A694 F65 flanges manufactured to ASME B16.5
(OP)
Hi everyone, I'd like to pose this question about ASTM A694 flanges. We once received an inquiry regarding ASTM A694 Gr.F65 WN 6" SCH80 600# flanges manufactured to ASME B16.5. Since the inquiry is coming from BP(Iraq), I don't think this big company may make such mistakes. However, A694 materials are not endorsed by B16.5. It really confuses me. Does that mean the client already performed necessary calculation to support this practice? All we need to do is to find the proper F65 material(of course no problem) and manufacture according to the dimensional requirements of B16.5? Besides, in MSS SP 44, there is carbon equivalent requirement for A694 materials. Is it applicable to the small sizes made to B16.5. Your help is highly appreciated.
Hebei Metals Industrial Limited
www.hbmetals.com
RE: A694 F65 flanges manufactured to ASME B16.5
Many engineers outside the USA are not so familiar with the MMS pipeline high strength material specs. They tend to think only of plant piping and ASME B16.5
I doubt anyone did any calculations.
What they probably want is an A694 Grade 65 flange, then they said B16.5 instead of specifying MMS SP-44.
That mistake happens all the time. It is a tiny bit unusual for high strength steel to be actually needed for 6" diameter, but certainly might be under unusual circumstances.
RE: A694 F65 flanges manufactured to ASME B16.5
Hebei Metals Industrial Limited
www.hbmetals.com
RE: A694 F65 flanges manufactured to ASME B16.5
Given that the flange dimensions are identical between 16.5 and MSS-SP-44, it is really only a material issue and the order maybe should have read dimensions to ANSI B 16.5.
However these flanges are so commonplace and used so frequently that it is not surprising that they are referred to as this.
Interestingly enough, I have a copy of BP flange specs from a few years ago for higher grade material which actually references ISO 15590 as its reference spec.....
X 65 6" is a little unusual, but might just be a tee or branch connection and not the main pipe itself.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: A694 F65 flanges manufactured to ASME B16.5
RE: A694 F65 flanges manufactured to ASME B16.5
RE: A694 F65 flanges manufactured to ASME B16.5
I used to think the same thing until recently trying to procure an odd-ball size 22" 600# flange per ASME B16.5. Turns out there is no such thing. 22" flange standards only exist under MSS SP44.
The wonderful world of industry standards....