Other
Other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross sections, the external diameter of which exceeds 406.4 mm, of iron or steel: > Other, welded: > Longitudinally welded: > Other: > Of alloy steel > Other
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 7305.31.60.90
Abrasion-Resistant Alloy Pipe for Mining Tailings
Extra-thick wall longitudinally welded alloy pipe >406.4mm OD for tailings slurry transport in mining. HTS 7305.31.60.90 for large welded alloy tubes. Hardfacing alloy resists wear.
Low-Temperature Service Alloy Welded Pipe
Longitudinally welded nickel-alloy steel pipe over 406.4mm for LNG terminals and arctic pipelines. HTS 7305.31.60.90 covers this large-diameter welded alloy tube. Charpy impact tested to -50°C.
Corrosion-Resistant Alloy Steel Pipe for Chemical Processing
Longitudinally welded duplex alloy steel pipe exceeding 406.4 mm diameter for corrosive chemical transport in industrial plants. HTS 7305.31.60.90 applies to this other large welded alloy tube. Duplex stainless provides pitting resistance in chloride environments.
High-Pressure Alloy Welded Pipe for Power Plant Cooling
Large diameter longitudinally welded alloy pipe for circulating high-volume cooling water in thermal power plants. Meets HTS 7305.31.60.90 criteria for welded alloy steel tubes over 406.4 mm OD. Alloy enhances fatigue resistance.
Alloy Steel Large Welded Pipe for Bridge Pile Foundations
Longitudinally welded alloy steel pipe over 16 inches diameter used as driven piles for bridge foundations. Classified HTS 7305.31.60.90 as other large welded alloy tubes. Corrosion protection via alloy selection.
Longitudinally Welded Alloy Steel Pipe for Oil Pipelines
This large-diameter pipe, with an external diameter over 406.4 mm, is longitudinally welded from alloy steel sheets and used in oil and gas transmission pipelines. It falls under HTS 7305.31.60.90 as it meets the criteria for other longitudinally welded tubes of alloy steel with circular cross-section exceeding 16 inches in diameter. The alloy composition provides enhanced strength and corrosion resistance for high-pressure applications.
Alloy Steel Large Diameter Welded Pipe for Water Transmission
A longitudinally welded alloy steel pipe exceeding 406.4 mm external diameter, designed for municipal water supply and transmission mains. Classified under HTS 7305.31.60.90 due to its welded construction, circular cross-section, and alloy steel material not specified elsewhere. Corrosion-resistant properties suit long-term buried infrastructure use.
Heavy-Wall Longitudinally Welded Alloy Pipe for Structural Supports
This thick-walled, longitudinally welded alloy steel pipe over 16 inches in diameter is used for structural columns in bridges and offshore platforms. It qualifies for HTS 7305.31.60.90 as an other welded tube of alloy steel with the specified large circular cross-section. High-strength alloy enhances load-bearing capacity.
Alloy Steel Welded Pipe for Industrial Slurry Lines
Longitudinally welded alloy steel pipe with external diameter exceeding 406.4 mm, engineered for transporting abrasive slurries in mining operations. Falls under HTS 7305.31.60.90 for its large-diameter, welded alloy construction not covered by specific subheadings. Abrasion-resistant alloy extends service life.
Large Diameter Alloy Welded Pipe for Offshore Oil Platforms
Longitudinally welded high-strength alloy steel pipe over 406.4 mm OD for jacket legs and risers in offshore oil platforms. Classified in HTS 7305.31.60.90 as other large-diameter welded alloy tubes. Designed to withstand marine corrosion and high cyclic loads.