×
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

selection of piping material

selection of piping material

selection of piping material

(OP)
Guys

I am looking for some guidelines on selecting piping material for process gases and chemicals ie some sort of a chemical compatability chart.Could anyone give some leads as to where I can get some information on this?

RE: selection of piping material

If you have WW Grainger catalog there is a large table in the reference section.  Also, similar information is available in the Ryan Herco catalog, but it is more limited to plastic materials.  I've also been told that the Fisher Scientific Catalog has this type of information, although I've not personally seen or used it.

A word of caution, different tables may have different recommendations.

If you find something on-line, please let me know.

BD

RE: selection of piping material

There some very good books and software by different organizations and companies that are excellent sources of corrosion data.  I would have to advise you to use this corrosion data as a guideline only in material selection .  In both the chemical and petrochemical industries subtle differences in conditions can have a tremendous effect on the type and treatment of  pipe being selected.
If you are not well versed in corrosion and material fundamentals I would recommend soliciting the service of a consultant to get you started.

www.nace.org     They have databases “Cor-Sur is one” and other books with corrosion data.

www.copper.org   Everything you wanted to know about copper and its’ alloys. They have links to all the nickel and S/S alloys’ .

www.corrosion.com  This site has some very good information

There are many others available once you define you primary areas of interests that you can purse.

Piping design in this day and time has become a much more rigorous endeavor than just a few years ago.

RE: selection of piping material

Try PERRY'S CHEMICAL ENGINEERS HANDBOOK. Excellent corrosion campatibility table is available.

RE: selection of piping material

unclesyd,

I have a handbook of corrosion data from ASM International.
what different between "Corrosion data from ASM with The Corrosion Data Survey from NACE?


RE: selection of piping material

There shouldn't be much difference with the exception that the NACE book will probably be little more extensive.

ASM is a good source of for every thing you want to know about materials. The also offer a correspondence course in corrosion fundamentals.

Both are good resources as they are very thorough and warn you about some of the subtle and not so subtle things that can happen with materials when doing design work.

If you get stuck or there are any questions with your material selections please post

Good luck

RE: selection of piping material

I am not expert, and I am looking for some guidelines as well on selecting piping material for brine line from tank to the users. Could anyone give some leads as to where I can get some information on this?

RE: selection of piping material

Bill ;

Brine can run into chloride corrosion problems with the stainless steels and might force you into exotic alloys. I'd look at plastics/composites, the choice subject to expected operating pressures/temperatures.

Joe

RE: selection of piping material

The Cole-Parmer and DeZurick websites have a fair online material compatibility chart.

Brine will corrode CS, but that might not be a concern with thicker pipe and regular shutdowns.

Austenitic Stainless is out.

Glass lined and/or plastic lined carbon steel are options.

Plastic pipes of various kinds are options too.

Exotic alloys, maybe even including duplex might be worth considering if you have the finances.

Cheers

Rob

RE: selection of piping material

Is it safe to use Stainless Steel pipe Type 304 for chlorinated water service in bottle rinsing applications? How about SS 304L pipe in ozonated water service?

RE: selection of piping material

Olmedo - the conventional wisdom at my workplace is that if the temperature is <65degC and chlorides are <50ppm, then there's a good chance SCC will not occur.

However, if there's high residual stress [e.g. socket welds], high pressure stress, other contaminants like sulfides, then those guidelines don't hold.

304SS is not resistant to SCC - and that would be the prime risk in a chlorinated water service.

Ozanated, I can't speak about.
Cheers

Rob

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