Piping Material Selection

50^o what? Fahrenheit, Celcius?

Assuming it's Celcius, here are a couple of suggestions.

A): PVC, PP.

B): PVC, PP.

C) SS316 stainless steel.

yup it is degree celcius. sorry i miss that out.

so for case A) and B) beside using the materials stated, can metals/alloys be considered as well? like maybe carbon steel? are they more expensive?

And from what i know ss316 stainless steel is quite expensive, are there other available suggestions?

http://www.coleparmer.com/techinfo/chemcomp.asp

20% sulphuric is sometimes put in PVDF piping, particularly near dilution points.

40% caustic - no problem with carbon steels. Be mindful to trace-heat and lag it so that it doesn't freeze-up in the winter.

Vinylester is the right piping material for all 3 liquids

AT THOSE Temp and Press and at the lowest Cost!

however pipes are not usually made with plastic am i right? they are usually lined with it so i would like to know what materials pipes are made of most? probably metals like alloys right?

Where you been at. They have been making pipe from plastic for a while. Because of all the reasons above that you stated.

oh ok.. i assumed most pipes are made of metal and are plastic-lined or glass-lined. if i were to choose between pvc, cpvc and FRP which would be more economical? if i were to use 304 stainless steel would it be ok?

and for high acid crude oil, plastic piping are not recommened? what factors/parameters should i consider with high acid crude oil?

<...to choose between pvc, cpvc and FRP which would be more economical...>

It is unlikely that a global Engineering forum would contain sufficient local information to determine this.

• How much design time is needed for the new system, and what is its hourly rate?
• How much piping of each class would need to be purchased?
• What are the local prices of each material for the sizes under consideration?
• What is the lead time for purchases of each type?
• What additional supports would be needed for each type of pipe?
• What sort of lifting equipment would be needed for each class of pipe to position it?
• What level of testing is required for the assembled pipework and what is its hourly rate?
• What level of record-keeping is required for the installations, and what is its hourly rate?

etc., etc.

These matters need to be determined locally.

<...i assumed...>

Assumptions are fraught with risk. Make sure these are evaluated and worked-in to the local economics calculations outlined.

Am i right to say since due to the possibility of the wax buildup present when crude oil running through the metal pipes (mainly steel), industries are starting to change the piping into plastic pipings.

However, i have these concerns such as static buildup and in addition that it's a known fact that steel is generally of stronger durability then metal.

And particularly since my compounds is of high acidity it won't be suitable in this casE?

I am in a dilemma to consider which material more appropriate now. Either it's steel pipes or plastic. Help!