CBP and the Commerce Department have investigated circumvention of antidumping and countervailing duty orders involving steel processed in Vietnam from substrate originating in countries subject to orders. Importers should conduct origin tracing due diligence and consult a customs broker to assess whether a specific product triggers circumvention findings before committing to a supply arrangement.

The 4.75–10 mm range is more versatile for stamping and roll-forming operations and is the dominant gauge for automotive structural parts and agricultural implement manufacturing. Coils over 10 mm are typically reserved for heavy plate applications where the coil form is less common; the thinner range therefore commands broader demand and higher trading volumes across more end-use sectors.