Blackplate is uncoated cold-rolled steel under approximately 0.361 mm thick, used as the substrate for tinplate and tin-free steel in can manufacturing. Within 720918, lines such as 7209182500 and 7209182520 specifically cover this sub-gauge material. Importers of can stock substrate should confirm whether their product meets the blackplate thickness threshold, as misclassification between blackplate and general thin coil lines can affect duty liability and trade-remedy exposure.

Yes — antidumping and countervailing duty orders on cold-rolled steel flat products from South Korea have been in place, and importers should verify with the International Trade Administration whether their specific grade, thickness, and specification fall within the current order scope. Section 232 measures apply independently of any antidumping orders, so both sets of obligations must be evaluated at entry.