×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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!

*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

BW FITTINGS - ASME B16.9 - TYPE OF TEST

BW FITTINGS - ASME B16.9 - TYPE OF TEST

BW FITTINGS - ASME B16.9 - TYPE OF TEST

(OP)
Hello everyone,

I received a specification that asks for several mechanical tests to be done on the BW fittings that we would like to purchase (Tensile Tests, Charpy Impact Tests, Hardness Tests).

The fittings will be designed according to ASME B16.9 which says that "Proof tests shall be made as set forth in this standard when the manufacturer chooses proof testing to qualify the fitting design".

If the manufacturer's fittings design have already been proof testing, can I tell the engineering team that the required mechanical test will lead to unnecessary cost ?
Or, am I wrong and it is not because the design of the fitting have been proof testing that other tests should not be conducted?

Thanks in advance for your time.

Best,
Fady

RE: BW FITTINGS - ASME B16.9 - TYPE OF TEST

Proof testing is only to qualify the fitting design.

All the other tests (chemical, tensile, charpy, hardness, etc.) are still required for each heat (and heat treat condition, plus possibly other limitations) per the applicable material spec (such as ASTM A234). This testing is normally performed by the fitting manufacturer in order to certify it to the relevant ASTM spec, so it usually won't be an extra cost unless you have nonstandard requirements.

RE: BW FITTINGS - ASME B16.9 - TYPE OF TEST

(OP)
Hi Jmec87,

Thanks for your explanation :)

Have a nice evening.

Fady

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! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

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