310 Stainless Seamless Furnace Tubing 4-inch from China
Seamless 310 high-temperature stainless tubing, 4-inch, for furnace muffles/thermowells, circular cross section. HTS 7304.49.00 other seamless stainless. Oxidation-resistant to 2000°F.
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
• ASTM A312 grade 310 cert; scaling test data optional
• Declare max temp but not boiler-specific