×
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

Galvanizing pipe post fabrication

Galvanizing pipe post fabrication

Galvanizing pipe post fabrication

(OP)
Hello;
A client of ours has specified compressed air piping be galvanized post fabrication.  The spec also calls for flanged connections.  Any idea what we'll have to do to the flange after galvanizing?  We are going to oversize the bolt holes slightly, and are thinking we'll have to machine the gasket face after galvanzing.  We'd appreciate any comments or input.  Thanks.
Brian

RE: Galvanizing pipe post fabrication

You need to post a few more details like size, type flanges, and materials.

Though not a common as it once was pipe spools were fabricated and then galvanized. You would mask off the flange face prior to galvanizing.

Is there any reason for taking this approach in lieu of using standard galvanized pipe and fittings.
 

RE: Galvanizing pipe post fabrication

(OP)
2", CL150, carbon steel slip on flange.  Pipe is sched 40.  It is for compressed air, and the pipe will be burried.  Total length of underground pipe is 120 feet.  They've asked us to supply the spools in 40' lengths, flanged ends.

We're still trying to drag a few more details out of the client.   

RE: Galvanizing pipe post fabrication

Direct burring flanged connections is a very poor practice! It's a leak waiting to happen! But as contractors you have to follow the "golden rule"! ...He who has all the gold makes the rules! ...Even bad ones!!! ...SO you going to used galv. bolts on these flanges connections? You could have galvanic corrosion if you don't. Good Luck!

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