ASTM A333 Grade 6 Low-Temp Seamless Pipe 4-inch from China
Seamless carbon steel pipe ASTM A333 Gr.6 for low-temperature service (-46°C), 4-inch diameter, nonalloy steel. Used in cryogenic piping systems. Falls under 7304.39.00 other seamless category.
Duty Rate — China → United States
75%
Rate breakdown
9903.82.0250%Except as provided for in headings 9903.82.14, 9903.85.67 and 9903.85.68, articles of aluminum, of steel or of copper and derivative aluminum or steel articles, as provided for in subdivisions (c)(i)–(v) of U.S. note 16 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
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Charpy impact test results mandatory for low-temp certification validation
• Normalized heat treatment records confirm material properties
• Pressure-temperature ratings per ASME B31.3 code reference