×
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

Welding specification in drawings
2

Welding specification in drawings

Welding specification in drawings

(OP)
Hello,

For a tank design (2 tons of water, atmospheric pressure) I have to designate in a welding symbol a technical requirement for the welding seam to be done as waterproof. What is a common phrase, sentence to be used in this case?

Thanks a lot.

RE: Welding specification in drawings

Add a reference to a field note, where you explain the requirements.  Some words you could include in that note would include "leak tight" "pressure tight", or simply spell out that the vessel is to be leak tested with water at x.x pressure, and that any leakage is to be repaired by the weld shop.

RE: Welding specification in drawings

Pilgrim2,

I think the term you are looking for is "seal weld"  However, be aware that this does not constitute a structural weld, just a water tight seal.

jjf

RE: Welding specification in drawings

Just state it as a full fillet weld both sides, all round.

There is no need to state it as waterproof due to once it has been fully welded inside and out, it's highly unlikely to leak especially if there is no pressure inside the tank.

RE: Welding specification in drawings

2
If you are the desginer/engineer of the project i suggest the following: I would use a flaged note in the tail of the weld. Create a secondary document that is a weld procedure and give it a document number. In the note I instruct the welder to weld IAW the Weld Proccdure.

I assume that it was be GMAW. If so then your weld procedure should provide information about metal transfere mode(Spray, Globlar, or Short Circuit), wire size, wire type, wire feed, voltage and minium amps.

You can check out www.weldreality.com for weld procdure information. We had that guy in as a consultant and he totaly fixed our problems with pentration.

Just a note about this if you do this many welder do not set there GMAW machine right and use globlar form of transfer of material. This causes a lack of pentration and the leaks you might experience.

RE: Welding specification in drawings

Pilgrim2, I agree with templetonc.
Call out a note referencing it's appropriate spec and a separate leak test note if needed.
templetonc, thanks for the link.

Chris
Sr. Mechanical Designer, CAD
SolidWorks 05 SP3.1 / PDMWorks 05
ctopher's home site (updated 06-21-05)
FAQ559-1100
FAQ559-716

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