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


RTJ channel for ring gasket acc. to USAS B16.5/ 1968

RTJ channel for ring gasket acc. to USAS B16.5/ 1968

RTJ channel for ring gasket acc. to USAS B16.5/ 1968


I am searching for the standard USAS B16.5/ 1968.

We have to prepare test blinds for some equipments which were made in 70's.

In these equipments, the nozzles appeared with the following notation: Flange SI DN80 PN63,3 according to USAS B16.5/ 1968.

The diameter of bolt circle is 170, it has 8 holes with 22mm diameter.

I think SI is the old notation for RTJ.

I want to know which is the RTJ channel dimensions for the ring gasket?

Thank you!

RE: RTJ channel for ring gasket acc. to USAS B16.5/ 1968

Cant help you with that, but PN-rating for a B16.5 flange? Never heard of that.

RE: RTJ channel for ring gasket acc. to USAS B16.5/ 1968

US ASA or USAS was the pre runner to ANSI and then ASME.

I've had a quick internet search and found a download, but it wouldn't download for me (possibly security issues) but if I was you I would write or call ANSI and ask how can you get a copy of US ASA B 16.5 1968.

Maybe you'll have better luck. http://ngbaationapplic.cf/asme-ansi-b16-5-1968

Does look a bit of a dodgy site alright....

Flanges used to be designated in metric and imperial at that time, but I agree with XL83NL, a PN 63.3 designation looks like it comes from a European standard, but may have been included somehow in B16.5 at that time.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

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!


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