Of iron or nonalloy steel
Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel: > Other: > Butt welding fittings: > With an inside diameter of less than 360 mm: > Of iron or nonalloy steel
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 7307.93.30
Carbon Steel Butt-Weld Elbow 4-inch
A 90-degree elbow fitting made from nonalloy steel with an inside diameter of 100 mm, designed for butt welding to connect pipes in low-pressure plumbing systems. It falls under HTS 7307.93.30 as a butt-welding fitting of iron or nonalloy steel with an inside diameter less than 360 mm. Commonly used in residential water lines and HVAC installations.
Iron Butt-Weld Reducing Coupling 2-inch to 1.5-inch
A reducer coupling cast from iron or nonalloy steel, connecting 50 mm to 40 mm pipes via butt welding in structural piping. HTS 7307.93.30 applies for its butt-welding function and sub-360 mm diameter. Used in construction frameworks and fire sprinkler systems.
Nonalloy Steel Butt-Weld Cap 8-inch
End cap fitting of nonalloy steel, 200 mm inside diameter, butt-welded to terminate pipe runs in utility systems. Classified under HTS 7307.93.30 as a butt-welding pipe fitting of iron/nonalloy steel <360 mm ID. Standard in municipal water treatment plants.
ASTM A234 WPB Butt-Weld Elbow 150 mm
Standard WPB grade carbon steel long-radius elbow per ASTM A234, 150 mm ID for butt-welding in refinery piping. HTS 7307.93.30 covers this nonalloy steel butt-welding fitting under 360 mm. Meets API 5L line pipe compatibility.
Black Iron Butt-Weld Equal Tee DN100
Uncoated black iron equal tee, DN100 (114 mm OD, ~100 mm ID), for butt-welded steam distribution lines. Falls in HTS 7307.93.30 as iron butt-welding fitting <360 mm ID. Traditional choice for heating systems.
Carbon Steel Butt-Weld Lateral 4-inch
45-degree lateral branch fitting from nonalloy steel, 4-inch size, butt-welded for angled pipe takeoffs. HTS 7307.93.30 classification for small-diameter butt-welding fittings. Used in mining slurry lines.
Nonalloy Steel Butt-Weld Stub End 6-inch
Stub end fitting for lap joint flanges, nonalloy steel 6-inch ID, butt-welded to pipe ends. Precisely HTS 7307.93.30 as qualifying butt-welding accessory <360 mm. Pairs with backing flanges in corrosive environments.
WPHY 42 Carbon Steel Butt-Weld Return Bend
High-yield WPHY 42 grade return bend (180°), nonalloy steel <360 mm ID for close-radius pipe turns. HTS 7307.93.30 for butt-weld carbon steel fittings. Suited for high-pressure gas lines.
Nonalloy Steel Butt-Weld Tee 6-inch
A straight tee fitting of iron or nonalloy steel, 150 mm inside diameter, for branching pipe runs in industrial water systems via butt welding. Classified in HTS 7307.93.30 due to its butt-welding design and size under 360 mm ID. Ideal for irrigation and drainage applications.
Carbon Steel Butt-Weld Cross Fitting 3-inch
A four-way cross fitting from nonalloy carbon steel, 75 mm ID, enabling multi-directional pipe connections through butt welding. Fits HTS 7307.93.30 for iron/nonalloy butt-welding fittings under 360 mm. Applied in oilfield gathering lines and process plants.