×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

F65 VS ASTM A105N FLANGE TEST PRESSURES

F65 VS ASTM A105N FLANGE TEST PRESSURES

F65 VS ASTM A105N FLANGE TEST PRESSURES

(OP)
Hello,

Can anybody advise me what hydrotest test pressures the below flanges can safely take:

1) 3"SCHXXS WN 10000PSI RTJ API6A 6BX - ASTM A105N
2) 3"SCHXXS WN 10000PSI RTJ API6A 6BX - ASTM A694 F65
3) 8" x 25.4mm WN 10000PSI RTJ API 6A 6BX - ASTM A105N
4) 8" x 25.4mm WN 10000PSI RTJ API 6A 6BX - ASTM A694 F65
5) 10" 18.3mm WN CL2500 RTJ API 6A 6BX - ASTM A105N
6) 10" 18.3mm WN CL2500 RTJ API 6A 6BX - ASTM A694 F65

The reason i ask is that we have some spools that require hydrotesting, but some spools have open ends that will be tied in offshore..therefore i need to know if the proposed "temporary flanges" will be capable of seeing a hydrotest pressure of 444Barg for the CLASS 2500 flange & a pressure of 786Barg for the 10000PSI flanges.

I look forward to your responses.

Kind Regards.

RE: F65 VS ASTM A105N FLANGE TEST PRESSURES

At temperatures below the de-rating pressure they are all more or less the same in B 16.5

BTW what is a #2500 6A6BX flange. This is mixing two flange codes surely?

Are you making this up? Table 5 of API 6A only lists 60K and 75K material for a 10000 flange.

A105 doesn't normally come in yield strength that high so who is suggesting you use a amterial which isn't listed in API 6A??

BTW this isn't really a "Boiler and pressure vessel" forum question. You're better off in pipelines piping and fluid mechanics...

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

RE: F65 VS ASTM A105N FLANGE TEST PRESSURES

Please check again on the 10k psi A105N flanges. The 10k + psi flanges that I have come across are made from 60/75k material (4130 etc.) As LittleInch said before, A105 doesn't normally fall into the requirements you would need to hold that sort of pressure. I am no expert on the subject, but I would urge purchasing an ideal flange for the hydro.

RE: F65 VS ASTM A105N FLANGE TEST PRESSURES

API has specific material strengths for WN flanges. Please verify that your A105N is compliant before testing.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources