×
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

Spiral Welded Pipes

Spiral Welded Pipes

Spiral Welded Pipes

(OP)
i am again tasked to review the applicability of spiral welded pipes (swp) to our system as these swp's are cheaper than our requirements, which are seamless and/or single longitudinal welded pipes.

consider our design parameters (depending on the fluid):
-6.60 mpag at 282degC;
-7.72 mpag at 294degc;
-2.14 mpag at 216degC;
-1.72 mpag at 208degC;
-1.08 mpag at 183degC;
-3.15 mpag at 222degC;
-3.86 mpag at 198degC;
-3.31 mpag at 198degC and
-1.38mpag at 198degC.

from my surfing some websites, swp's are mainly used for piles, supports, water ducts and the like. there is no mention (or did i miss a website??) that swp's can be used for high pressure, high temperature applications.

can somebody please direct me to a website where a plant uses swp's similar to our applications?

if a plant is authorized to use the api 5L monogram, is it safe to assume that the plant does not manufacture swp's?

is the power piping code b311 applicable also to swp's? does the b311 allow the use of swp's?

can i recommend the use of spiral welded pipes in our application? note that we usually have stub ins, pipe shoes that might compromise the spiral welds. or will such connections have an effect on the integrity of the spiral welds?

thanks and am looking forward to your advices and comments.

RE: Spiral Welded Pipes

I know that spiral or helical welded pipe has been used in high pressure gas transmission pipelines up to at least a 600ANSI rating.  I believe that IPSCO from Canada produces this type of pipe, it may be worth checking out their website or giving them a call to check on suitability for your application.  I'm sure that there are also several other mills that also produce this type of pipe.   

RE: Spiral Welded Pipes

My company uses SWP in the oil sands of northern alberta CA. It was a pain to get this approved, but it is not impossible. A good place to start would be Northwest pipe company or Chicago Tube. They would be able to look up the specicifactions for spiral weld. I tried to attach a excel file (we'll see if it worked) which I use for spec'ing pipe. It is for slurry transportation, but might help.

Pete

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