×
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

12.5% Mill Undertolerance

12.5% Mill Undertolerance

12.5% Mill Undertolerance

(OP)
Hi,

I understand that the pipe wall thickness at maximum mill under tolerance is considered at 12.5%.

Where can I find this information in the ASME code book ? UG-16(d) says "The manufacturing undertolerances are given in the several pipe and tube specs listed in the applicable tables in SubSection C"

I am unable to find the table of paragraph that actually mentions that the undertolerance in 12.5%.


RE: 12.5% Mill Undertolerance

The wall thickness tolerances are listed in the ASTM and API specifications.

RE: 12.5% Mill Undertolerance

Theyre in the relevant material standard.
Refer to e.g. ASTM A312 (or ASME SA312 in sect II-A) for details, when you have stainless steel pipe.

RE: 12.5% Mill Undertolerance

Look in the material specs, Sec 2.
It is either in the product spec SA312, or in the general spec that it references SA530 (as an example).
You may need both specs.

= = = = = = = = = = = = = = = = = = = =
Plymouth Tube

RE: 12.5% Mill Undertolerance

(OP)
Thanks to everybody for the reply.

The pipe we have is a 6" SA-53 Grade B Type E pipe.

RE: 12.5% Mill Undertolerance

Hi Kelvigal-

You'll find the wall thickness tolerance for SA-53 in Section II Part A 2013 under SA-53 / SA53M in paragraph 12.3 (page 167 of the print version, page 217 of the pdf).

Note that tolerances on weight and diameter are the other sub-paragraphs of paragraph 12.

RE: 12.5% Mill Undertolerance

(OP)
Thank you, jte !!

RE: 12.5% Mill Undertolerance

Pipe dimensions are given in ASME B36.10 (diameter and weights)
Permissible variation in dimensions are given in applicable specifications
For example Clause 12.3 of SA-53 or clause 16.3 of SA-106

RE: 12.5% Mill Undertolerance

I think you should refer ASME SA 530 TABLE 1

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