Stainless steel flat-rolled products are classified by width: widths ≥600mm generally fall under 7219, while widths <600mm fall under 7220; they are further subdivided by hot-rolled/cold-rolled, thickness, and whether further processed.

Common pitfalls: - Declaring slit narrow coils under 7219 (they should be 7220). - Failing to distinguish cold-rolled from hot-rolled, resulting in tax rates and regulatory conditions that do not match. - Surface treatment (brushing, mirror finishing, embossing) may affect the subheading.

It is recommended to verify the code shipment by shipment with the customs broker before shipping, and to retain the material certificate and specification sheet for reference.