High-Strength Steel for Shipbuilding Hull Plates from China
Coiled hot-rolled nonalloy high-strength steel (>10 mm thick, >600 mm wide) with 355 MPa minimum yield per note 72(a), not further worked. Processed into heavy plates for commercial ship hulls, bulk carriers, and marine vessel construction requiring impact toughness.
Duty Rate — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.91.0125%Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
Import Tips
• Include ABS/DNV classification society approvals alongside tariff yield strength certification
• Document impact testing results (Charpy V-notch) typical for marine high-strength grades
• Separate marine-grade steel entries may qualify for different quota allocations