×
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

penetration for drainage pipes

penetration for drainage pipes

penetration for drainage pipes

(OP)
thanks for your response for my last question,
we have welded the 3/4" drainage stainless steel without gap (square joint), but unfottunatly we are not sure whether the penetration is good or not.
I want to know the fully penetration is essential in square joint?
I want to know for drainage lines can we ignore the fully penetration?

RE: penetration for drainage pipes

Here is your situation as I see it;
If you had used a square joint for joining stainless steel drain pipe, and stagnant water sits in these drain pipes you will have a crevice for corrosion. In other words, leaks will eventually occur in the weld joints. If you need to determine if you have penetration, the best method if to run a mock-up of the set-up that you used in the field and test it.

I don't understand why you didn't use clay tile or PVC for drain pipe to avoid this problem.

RE: penetration for drainage pipes

Only two real options.  Either rely on you weld qualifications to assure you that you have good joints, or go inside with borescope and look at them.
You might be able to UT them, but setup and calibration is going to be a real pain.
Stainless is often used for mixed waste lines.  As long as there are no chlorides it is very good.  You don't have to worry about solvents and such.

= = = = = = = = = = = = = = = = = = = =
Corrosion, every where, all the time.
Manage it or it will manage you.
http://www.trent-tube.com/contact/Tech_Assist.cfm

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