With an inside diameter of 360 mm or more
Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel: > Other: > Butt welding fittings: > With an inside diameter of 360 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
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Subheadings
Products classified under HTS 7307.93.90
Carbon Steel 24-Inch Butt Weld Elbow
A 90-degree elbow fitting made from carbon steel designed for butt welding, featuring an inside diameter of 610 mm for large-scale piping systems. It falls under HTS 7307.93.90 due to its large internal diameter exceeding 360 mm and construction as a butt welding fitting of iron or steel. Commonly used in industrial water supply and sewage networks.
ASTM A234 WP11 Large Diameter Tee
A straight tee fitting of alloy steel (ASTM A234 WP11) for butt welding with 400 mm inside diameter, used in high-temperature petrochemical pipelines. Classified under HTS 7307.93.90 as a butt welding fitting with internal diameter over 360 mm. Essential for branching large industrial gas lines.
24-Inch Carbon Steel Reducing Elbow
A reducing 90-degree elbow transitioning from 24-inch to 18-inch diameter, carbon steel construction for butt welding with minimum ID of 360 mm. HTS 7307.93.90 applies to its large inside diameter and butt weld design for oil & gas pipelines. Allows size transitions in large conveyance systems.
36-Inch Steel Butt Weld Cross Fitting
Four-way cross fitting of carbon steel for butt welding, 914 mm inside diameter for massive water distribution mains. Falls under HTS 7307.93.90 for extra-large butt welding pipe fittings of iron or steel. Used in municipal infrastructure projects.
Alloy Steel 20-Inch Equal Tee
Equal tee fitting (508 mm ID) made from ASTM A234 WP5 alloy steel for butt welding in power plant steam lines. HTS 7307.93.90 covers its large diameter and butt weld fitting status. Withstands high temperatures and pressures.
Carbon Steel 48-Inch 45-Degree Elbow
Long radius 45-degree elbow of carbon steel, 1,219 mm inside diameter for butt welding in slurry pipelines. Classified HTS 7307.93.90 for oversized butt weld fittings. Ideal for mining and tailings applications.
Large Diameter Steel Cap End
Butt welding cap closure for 24-inch (610 mm ID) steel pipes, carbon steel construction for pipeline termination. HTS 7307.93.90 due to large internal diameter and butt weld fitting type. Used to seal oil transmission lines.
ASTM A420 WPL6 Low-Temp Tee
Low-temperature carbon steel tee (ASTM A420 WPL6) for butt welding, 400 mm ID for LNG pipeline branches. Falls under HTS 7307.93.90 as large diameter butt welding fitting of steel. Impact-tested for cryogenic service.
Heavy Wall 30-Inch Reducer
Concentric reducer from 30-inch to 24-inch ID (762 mm min), heavy wall carbon steel for butt welding in refineries. HTS 7307.93.90 for large ID butt weld fittings. Handles abrasive slurries effectively.
API 5L Grade B Large Elbow
90-degree LR elbow API 5L Gr B carbon steel, 24-inch ID for butt welding in natural gas pipelines. Classified HTS 7307.93.90 due to oversized diameter and pipeline fitting design. Meets line pipe quality standards.