×
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

API 5L SAW / GMAW pipes - longitudinal weld joint quality factor

API 5L SAW / GMAW pipes - longitudinal weld joint quality factor

API 5L SAW / GMAW pipes - longitudinal weld joint quality factor

(OP)
ASME B31.3 allows 0.95 (table 302.3.4) with examination as required by specification. RT examination is not required (table 24 API 5L). There is a note under table 302.3.4 saying that "It is not permitted to increase the joint quality factor by additional examination for joint 1 or 2." The joint method in API 5L not being one of them, it was thought that the factor could be increased to 1 by full length RT.

There is an interpretation, 21-06 of B31.3 2008 edition, which says, "Code does not address increasing the weld joint quality factor of API 5L SAW, GMAW"

Whereas per table 302.3.4, single or double BW with 100% RT is allowed to have factor of 1.

How would one read this? What will be joint factor?  

RE: API 5L SAW / GMAW pipes - longitudinal weld joint quality factor

There is no evidence in the ASME B31.3 that additional radiography increases factor Ej from 0,95 to 1,00 as far as I know. Regards, ThPl

RE: API 5L SAW / GMAW pipes - longitudinal weld joint quality factor

(OP)
Can you please look at it in light of what I have said above. It does allow a higher factor for single and double BW with additional RT as in table 302.3.4. My question is why the same is not applied in the case of API 5L pipes.

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

eBook - Mastering Tolerances for Machined Parts
When making CNC machined parts, mastering tolerances can be challenging. Are general tolerances good enough? When does it make sense to call out for tighter tolerances? Do you need a better understanding of fits, datums, or GD&T? Learn about these topics and more in Xometry's new e-book. Download Now
eBook – How to Choose the Correct Corrosion Testing Method
When designing a metal component, engineers have to consider how susceptible certain alloys are to corrosion in the final product’s operating environment. In a recent study by NACE (National Association of Corrosion Engineers), it was estimated that the direct and indirect costs of corrosion in the United States is approximately 6.2% of the GDP. In 2016, that cost exceeded $1 trillion dollars for the first time. Download Now

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