For frozen saline pipelines at -35°, in addition to 16Mn, can Q235B material also be used?
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This post was last edited by piter_1984 on 2012-2-8 15:15. As the title says! Please share your opinions.................
The last edit to this post was made by DXJ122 on 2012-2-6 at 16:49. As a side note, why use saline at -35 degrees? Aside from the material issues you mentioned, heat insulation is also quite important in this application. Direct ammonia evaporation can also achieve the required -35 degrees, while eliminating the need for a brine preparation system and brine transfer pumps.
Today, Q235B pipes are hardly used anymore, as their mechanical properties are relatively poor; they are more often used for structural components, not to mention in saline environments at -35 degrees Celsius.