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Anhydrous HCL could be piped in carbon steel for the ambient temperature conditions. For the -35C condition a stainless steel pipng system would avoid most of the requirements (impact tested materials) that would accompany a carbon steel system for service below -20F.
The stainless steel system would also offer some corrosion resistance in event of moisture contamination.
Tank trucks and tube trailers are usually stainless steel, while rail tank cars have been carbon steel.