SA-335 P11 Alloy Steel Boiler Tube from China
ASME SA-335 Grade P11 seamless alloy steel tube with 50mm OD and 15mm wall thickness for high-temperature boiler service. Classified under HTS 7304.59.80.25 for its seamless alloy steel construction, circular cross-section, and wall thickness over 12.7mm. Commonly used in power plants for superheater and reheater applications.
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 ASME material certification and heat treatment records to substantiate boiler tube classification
• Declare exact grade (P11, P22, etc.) as it affects alloy content verification during customs exam
• Watch for inadvertent classification as carbon steel (7304.39) due to insufficient chromium/molybdenum documentation