Having a wall thickness of 19 mm or more
Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of other alloy steel: > Other: > Other: > Other: > Other > Having an outside diameter exceeding 114.3 mm but less than 190.5 mm: > Having a wall thickness of 19 mm or more
Duty Rate (from China)
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
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
Products classified under HTS 7304.59.80.40
Seamless Alloy Steel Drill Pipe Casing
Heavy-duty seamless tubes made from alloy steel with a circular cross section, outside diameter of 168.3 mm, and wall thickness of 25 mm, used as protective casing in oil and gas drilling operations. Classified under HTS 7304.59.80.40 due to seamless construction, alloy steel material, specified diameter range (114.3-190.5 mm), and thick walls exceeding 19 mm.
Thick-Wall Alloy Steel Pressure Piping
Seamless circular alloy steel pipes with 152.4 mm OD and 22 mm wall thickness, engineered for high-pressure fluid transport in petrochemical plants. Fits HTS 7304.59.80.40 for seamless alloy steel, OD 114.3-190.5 mm, wall ≥19 mm.
Alloy Steel Boiler Tube for Power Plants
Seamless tubes of alloy steel, 177.8 mm OD and 28 mm wall thickness, designed for superheated steam conveyance in utility boilers. Classified in 7304.59.80.40 as seamless, alloy, circular, within OD limits, thick-walled.
Heavy-Wall Seamless Alloy Steel Cylinder Liner
Seamless alloy steel tube with 139.7 mm OD and 24 mm wall thickness, used as cylinder liners in large diesel engines. Meets 7304.59.80.40 criteria: seamless, alloy steel, circular CS, OD range 114.3-190.5 mm, wall ≥19 mm.
Alloy Steel Hydraulic Cylinder Barrel
Precision seamless alloy steel barrel, 165.1 mm OD, 21 mm wall, for heavy hydraulic cylinders in construction equipment. HTS 7304.59.80.40 applies for seamless alloy tubes of specified size and thickness.
Seamless Alloy Steel Heat Exchanger Tube
Thick-walled seamless alloy tubes, 181 mm OD and 23 mm wall, for shell-and-tube heat exchangers in refineries. Classified 7304.59.80.40: seamless, alloy, circular, correct OD range, wall ≥19 mm.
High-Pressure Alloy Steel Injection Tubing
Seamless alloy steel tubing, 146 mm OD, 26 mm wall thickness, for high-pressure injection systems in chemical processing. Fits 7304.59.80.40 specifications precisely.
Alloy Steel Structural Hollow Section
Seamless thick-walled circular hollow section from alloy steel, 159 mm OD, 20 mm wall, for structural columns in heavy construction. HTS 7304.59.80.40 for seamless alloy tube specs.
Seamless Alloy Steel Gun Barrel Blank
Heavy seamless alloy steel tube, 130 mm OD, 30 mm wall thickness, supplied as rough barrel blanks for large caliber weapons. Classified 7304.59.80.40 as unfinished seamless tube.
Corrosion-Resistant Alloy Drill Stem
Seamless alloy steel drill stem tubing with 168 mm OD, 25 mm wall, enhanced corrosion resistance for sour gas drilling. Meets all 7304.59.80.40 criteria exactly.