×
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

ASTM A274 - WPB - Tapping in a standard forged fitting

ASTM A274 - WPB - Tapping in a standard forged fitting

ASTM A274 - WPB - Tapping in a standard forged fitting

(OP)
Can we take a tapping from a standard forged fitting i.e. suppose we want to take a 2" tapping (extended Piping) from the center of an standard 6" elbow (ASTM A274 - Grade WPB) is it ok as per the API / ASME standards or do we need to provide a reducing TEE ?? I there a note refering to the above point anywhere in any kind of standard ?

Matter most urgent..Pls. help

RE: ASTM A274 - WPB - Tapping in a standard forged fitting

No you can't. You would need to check the opening reinforcement, and, if you wanted to use the rated pressure for the elbow, I guess it wouldn't work.
What about using a threadolet? However even there you wouldn't have anymore a standard component, so you would need to check your design in order to satisfy code requirements.

prex

http://www.xcalcs.com
Online tools for structural design

RE: ASTM A274 - WPB - Tapping in a standard forged fitting

Amand195....

PREX is correct..... You simply cannot connect piping branch lines in any particular component that you can get a thread into.

The whole reason that forged components like weldolets, sockolets, threadolets etc exist is to address the need for pressure reinforcement and to provide an acceptable weld profile.

There is some information here:

http://www.bonneyforge.com/OletCat.PDF

However, you may also want to review the information in a book like the "Piping Handbook" by Nayaar

You seem to have no background in piping and I believe that you do not understand the code-mandated concept of "pressure reinforcement" in piping and pressure vessels

my opinion only....

MJC

  

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