Where the
world gathers for metal finishing
Q&As since 1989


-----

Best material for pipeline to transport HF + HNO3

2005

I want to construct a pipeline to transport HF & HNO3 for a pickling plant.
What material is best suitable to it.
also can you give me material for pipeline to transport KMNO4 , Lime, Phosphate & dilute HCL

Thank You

Abhishek Pande
Young Star Engineers - Nagpur, Maharashtra, India

---

2005

Hi Abhishek,

Try PVC ... but you don't give any concentrations, nor pressure, nor temperature nor if the pipe is indoors, underground or exposed. Once those factors are known, one can make a more intelligent choice.

There are other plastics some violently expensive, however.

For the other line, presupposing abrasion from the lime, I'd opt for Polyethylene. This is available for low pressure applications and buried with 20' bell and spigot ends up to 10 feet or 12 feet diameter and even up to 5 feet diameter, heavy wall, for butt fusion ... I mean that's what's available over here ... and in Europe you can get 6 foot dia hdPe pressure pipe.

Freeman Newton [deceased]
(It is our sad duty to advise that Freeman passed away
April 21, 2012. R.I.P. old friend).