Radiation shielding for medical imaging, nuclear facilities, and industrial radiography is the primary driver for heavy lead plate and sheet. Architectural and heritage restoration applications use lead sheet for roofing, flashing, and cladding. Lead foil has niche uses in laboratory and specialty packaging applications. Each sector has distinct thickness and purity specifications that should be confirmed against supplier mill certifications.

Both lead powders and flat-rolled forms (plates, sheets, strip, and foil) fall within this single SITC heading, but they may separate at the HTS 10-digit level for duty and statistical purposes. Importers should confirm the specific HTS subheading applicable to their product form with a licensed customs broker, as the classification affects both duty treatment and any applicable trade-remedy exposure.