×
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 - 2012 L245R or BR / L245N or BN

API 5L - 2012 L245R or BR / L245N or BN

API 5L - 2012 L245R or BR / L245N or BN

(OP)
hello all, this is my first thread so i hope it is in the right place,
looking at the two grades of API 5L - 2012 can someone help me identify what the letters B or BR AND N or BN stand for please,or is there a page online i can find the answer and list of all other letters used in API 5L ? so far i cannot find anywhere.
thank you

RE: API 5L - 2012 L245R or BR / L245N or BN

the letter B refers to the degree of the pipe (metric L245), the next one in the list is the X42 (metric L290) and is designated according to the SMYS -> 42ksi or 290MPa.

the letter that follows R or N refers to the condition in which the pipe is delivered: R = as rolled or N = Normalized

the other letters contained in the version are M = thermomechanical treatment; Q = Quenched and tempered

And if the pipe meets the additional requirements of Annex H for Sour Service, an S is added.

API 5L BNS is a grade B pipe, normalized and meets the requirements of Annex H for Sour Service.

L245R or BR = pipe whit SMYS=245MPa(metric) as-rolled.
L245N or BN = pipe whit SMYS=245MPa(metric) normalized.

RE: API 5L - 2012 L245R or BR / L245N or BN

(OP)
thank you MarriolaV that's a great help

RE: API 5L - 2012 L245R or BR / L245N or BN

You’re welcome.

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


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