Corrosion-resistant steel for pipelines in phosphate production equipment
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Besides the 300 series, 904L, and 45N+, what other steel grades offer good cost-performance for corrosion-resistant materials used in pipelines for phosphate production equipment?
Pipeline equipment with a steel lining and PTFE, as well as those coated with PFA, are all suitable; however, glass-lined pipes are not very suitable for use with phosphoric acid!
Lead and lead alloys are better. Their excellent corrosion resistance to phosphoric acid is due to the formation of a strong, insoluble layer of lead phosphate on their surface.
What you’re referring to is relative; for example, 98 acid is the same as carbon steel； This protective film that forms is actually corrosion; under normal conditions there is no problem, but if factors such as flow rate are involved, the protective film will continue to form, which means corrosion will continue as well. Isn’t it?
It still depends on the corrosion rate; as long as it’s sufficient for use, that’s fine, after all, the lining is expensive
It still depends on the corrosion rate; as long as it’s sufficient for use, that’s fine, after all, the lining is expensive
We are a manufacturer of fluorinated lining valves, and I personally think that PTFE pipes are more suitable
Are there any details available regarding the temperature and pressure conditions of this phosphate production equipment?
2507 and 904 are both good