Carbon Steel Pipe and Low Conductivity Water

Because it's not recommended, assume it's high. And the water won't stay at that conductivity for long, either.

Use plastic or stainless steel, only! Don't even bother with anything else.

Several books were written on the conductivity of water, alcohols, and other liquids in the late 60's and 70's. Google that subject.

Don't even consider using carbon steel for low conductivity water. It will change the second you put water into it due to dirt and other contaminants from the manufacturing process. Kick in some rust starting them and you have a mess. CS pipe is seldom used for water for good reasons. Primarily rust from dissolved oxygen. This then starts to reduce the effective i.d. of the pipe and also contaminates the water.

Choose St Stl (304 is ok but 316 is better if you have to. Glass pipe used to be used but others have replaced it. Clean plastic pipe is good but flush it out vigorously first to remove any contaminants from manufacturing. Some exotics and expensive are ok, monel, etc. but cheaper ones, such as St Stl, are better on the pocket book.

Good Luck, Old Salt

What is the process network you consider for this selection? Is it only a pipeline for transferring fluid from Point A to B? We need to see the influence of dissolved gases and other contamination possibilities in the whole network. It all depends on how many control means you want to have for the whole process. It is not feasible to have many controls! Consult a Corrosion Lab/Testing Agency to perform the test for various conditions and explore the economical choice of materials. If the application is highly critical, go with the corrosion resistant materials to avoid uncertainties.

WE CAN CONTROL CORROSION IN INDIA--

re:

What is the process network you consider for this selection? Is it only a pipeline for transferring fluid from Point A to B? We need to see the influence of dissolved gases and other contamination possibilities in the whole network. It all depends on how many control means you want to have for the whole process. It is not feasible to have many controls! Consult a Corrosion Lab/Testing Agency to perform the test for various conditions and explore the economical choice of materials. If the application is highly critical, go with the corrosion resistant materials to avoid uncertainties.

All of my answer was directed towards you original answer which was: Does anybody have tables/corrosion rates on using low conductivity water-.2 micromos-in carbon steel pipe? I know its not recommended.

If you want a different answer other than what you have originally stated give a good question. I and all other posters can only go by what you state in your question. Getting a good answer requires giving a good question. What you said in the 2nd posting has nothing to do with the original post for almost everyone who replied to you!

In here, the good ole' USA, it is often referred to as "GIGO Garbage In, Garbage Out". Also, don't blame me for the erroneous post, I was only answering what you asked and it was a darn good post, if I say so myself. Maybe I know more about electro conductivity than what you thought I did.

My original posts still stands.

Good Luck, Old Salt

You should research the subject to determine what work has already been done.

Fundamentals of Corrosion and Corrosion Control

Basics of Corrosion Control

Where have you looked so far?

Software solutions for reporting and corrosion control - MetriCorr

Predict 6.0 - Free Trial of Corrosion Prediction Software for Carbon ...

97256 corrosion control software and corrosion monitoring. - NACE

Don't reinvent the wheel, do some basic research, on your own.

Use PVDF pipe instead.