×
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

Pipe designation in NB & DN

Pipe designation in NB & DN

Pipe designation in NB & DN

(OP)
Dear expert,

Kindly furnish the correct terminology of Pipe designations in NB DN and their references to ID and OD of pipes. Is there any rules for these designations

Regards

vrl3

RE: Pipe designation in NB & DN

Both NB and DN refer to an arbitary nominal size of pipe that is loosely related to the inside and outside diameter of the material. It varies depending upon whther the sizes are Imperial or metric (soft conversions), the material and the particular standard. ANSI B36.10 defines the sizes for American carbon steel in Imperial sizes but there are a miriad of ISO, JIS, Australian and other countries standards that cover ABS, PP, PE, FRP, PVC-U, PVC-O, PVC-M, Copper, ductile iron etc that have differing bores and outside diameters. You can look some sizes up on the net but you are better off referring to the pipe standard of manufacture of materials for details of ID and OD and the various tolerances on wall thickness, out of roundness, ovality, surface defects etc.

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