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


Fabricated Union

Fabricated Union

Fabricated Union

I am trying to establish that a fabricated pipe union threads are suitable for the service.
M36 x 2.0
Length of threads is 10.5mm.
Material is SA-105 for male threads, SA-240-316 for nut.
Union is for a 3/4" pipe.
363psi @ 482F

I have calculated thickness required of the weld ends (thinnest portion) but need to ensure the threads can handle the load.

The issue I have is trying to establish what area of threads I require.
Any help or resources would be greatly appreciated!

RE: Fabricated Union

Maybe I don't need to show thread strength if union conforms to Fig. 335.3.3 - where sealing is at a surface other than the threads?

RE: Fabricated Union

To save time for making it by yourself, try B16.11 for pressure rating and the thread fittings detail, and ASME B1.20 for pipe thread detail.

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!


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close