Having a wall thickness exceeding 12.7 mm
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 of 38.1 mm or more but not exceeding 114.3 mm: > Having a wall thickness exceeding 12.7 mm
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 7304.59.80.25
42mm OD x 20mm Wall Alloy Steel Seamless Pipe
A seamless tube of alloy steel with an outside diameter of 42mm and wall thickness of 20mm, exceeding 12.7mm, used in high-pressure hydraulic systems. It falls under HTS 7304.59.80.25 due to its circular cross-section, seamless construction from alloy steel, and specified dimensions. These pipes are ideal for applications requiring superior strength and corrosion resistance.
SA-335 P11 Alloy Steel Boiler Tube
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.
76mm OD x 18mm Wall P5 Alloy Steel Pipe
Seamless ASTM A335 P5 chrome-moly pipe with 76mm outside diameter and 18mm wall thickness for refinery hydrogen service. Meets HTS 7304.59.80.25 criteria for alloy steel seamless tubes of specified dimensions. Designed for elevated temperature and corrosive petrochemical environments.
3-inch Schedule 160 Alloy Steel Pipe
Nominal 3-inch (88.9mm OD) Schedule 160 seamless alloy steel pipe with ~22mm wall thickness for high-pressure drilling risers. Precisely matches HTS 7304.59.80.25 specifications for heavy-walled seamless alloy tubes. Used in oil & gas exploration equipment.
60mm OD x 25mm Wall 9Cr-1Mo Alloy Tube
Grade 91 (9Cr-1Mo-V) seamless alloy tube, 60mm OD x 25mm wall, for advanced supercritical boilers. HTS 7304.59.80.25 classification applies to its heavy wall thickness and alloy steel seamless construction. Critical for next-generation power plant efficiency.
ASTM A519 4140 Seamless Mechanical Tubing
4140 chrome-moly seamless mechanical tubing, 100mm OD x 16mm wall, for machinery shafts and axles. Falls under HTS 7304.59.80.25 as other seamless alloy steel tubes with wall thickness exceeding 12.7mm and OD 38.1-114.3mm. Offers excellent strength for heavy equipment components.