×
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

HOW TO SELECT PIPES AND FITTINGS MATERIAL FOR GAS PIPE LINE WORK

HOW TO SELECT PIPES AND FITTINGS MATERIAL FOR GAS PIPE LINE WORK

HOW TO SELECT PIPES AND FITTINGS MATERIAL FOR GAS PIPE LINE WORK

(OP)
Dear,

Good Day,

How to select piping and fittings materails for Gas Pipe line , if the design conditions are given like Design temperature and Design Pressure.
If the medium change like if there is preheater we use water as medium, so the piping material change or not ?

Thanks and Regards

RE: HOW TO SELECT PIPES AND FITTINGS MATERIAL FOR GAS PIPE LINE WORK

Use the pipespec. for Your Fluid.

RE: HOW TO SELECT PIPES AND FITTINGS MATERIAL FOR GAS PIPE LINE WORK

Determine corrosivity of fluid, select material, calculate diameter required for intended flow conditions. If carbon steel is selected, calculate minimum wall for low strength material like API 5LX-42. If wall calcs > standard, calculate again for higher strength steel, like X60. It is assumed that the preheater is a heat exchanger, gas on tube side, water on shell side or vice versa so water does not contact gas and the temperature is not much above ambient. Gas will cool with distance from preheater so no material is change would be expected. Don't know why you would preheat gas before flowing into a pipeline, unless gas were initially very cold (below freezing, which would affect metallurgy required for toughness.

RE: HOW TO SELECT PIPES AND FITTINGS MATERIAL FOR GAS PIPE LINE WORK

Weldstan, I don't know if Your advice reaches the OP.
When they don't have specs over there, they should better hire a piping expert.

RE: HOW TO SELECT PIPES AND FITTINGS MATERIAL FOR GAS PIPE LINE WORK

europipe,
Agree that the OP's question is a clear indication that he/she is way out of his.her depth to even be considered for designing piping/pipelines.

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