×
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

Straightness

Straightness

Straightness

(OP)
As per A500 - Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes

" 1.2 This tubing is produced in both welded and seamless sizes with a maximum periphery of 64 in. (1626 mm) and a maximum wall of 0.625 in. (15.88 mm). Grade D requires heat treatment.

11.4 Straightness—The permissible variation for straightness of structural tubing shall be 1⁄8 in. times the number of feet (10.4 mm times the number of metres) of total length divided by 5."

1) Can I use the above formula for P22 of any other pipe i.e. ss?
2) Can anyone please differentiate structural tubing to pipe we normally use as nozzles in a vessel or drum?
3) Can anyone share a code or reference to where I can find and compute for the tolerance of pipe straightness?


thanks.

RE: Straightness

Each product spec has its own rules. And while you will find that many use a common wording you don't know until you check.
This spec gives you 0.125"/5 per foot, or 0.025"/ft. I know of tubular specs that are tighter (some are 0.030"/3') and some that are looser.

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

RE: Straightness

You will find straightness and other general standards for alloy and SS pipe (including P22) in ASTM A999.

RE: Straightness

But you need to look in product specs, they don't all default to the general A999 (pipe) or A1016 (tube) specs.

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

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