Grooved Ductile Iron Reducing Coupling 4x3-inch from Japan
A reducing coupling in ductile iron connecting 4-inch to 3-inch grooved pipes, used in plumbing and irrigation systems. Classified under HTS 7307.19.30.40 for its cast ductile construction and grooved ends. Provides transitional sizing with high-pressure tolerance.
Duty Rate — Japan → United States
55.6%
Rate breakdown
9903.82.0250%Except as provided for in headings 9903.82.14, 9903.85.67 and 9903.85.68, articles of aluminum, of steel or of copper and derivative aluminum or steel articles, as provided for in subdivisions (c)(i)–(v) of U.S. note 16 to this subchapter
9903.03.060%Articles of aluminum, of steel, or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans, and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; and semiconductor articles, of any country, as provided in subdivision (aa)(v) of U.S. note 2 to this subchapter
Import Tips
• Declare exact size reduction (e.g
• 4x3 NPS) on commercial invoice to prevent sizing disputes
• Provide hydrostatic test certifications; importers often overlook ductile iron's ASTM A536 Grade 65-45-12 requirement
• Label for potable water compliance (NSF-61) if applicable to avoid reclassification issues