Grooved Ductile Iron Concentric Reducer 8x6-inch
Concentric reducer in ductile iron with grooved ends for smooth diameter transitions in large HVAC ductwork. Classified HTS 7307.19.30.40 for cast ductile grooved fittings. Maintains flow efficiency in high-volume systems.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If stainless steel cast reducer
Stainless cast fittings classify separately from carbon steel cast.
If sold as flanged reducer
Flange-end ductile fittings have dedicated statistical breaks.
If integral to heat exchanger manifolds
Heat exchange equipment parts use Chapter 84 headings.
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Import Tips & Compliance
• Document concentric vs. eccentric design explicitly for correct suffix
• UL listing for fire-rated systems required; missing certs delay clearance
• Weigh samples to verify ductile density vs. gray iron pitfalls
Related Products under HTS 7307.19.30.40
Grooved Ductile Iron Coupling 2-inch
A 2-inch ductile iron coupling with grooved ends designed for joining steel pipes in fire protection and HVAC systems. It falls under HTS 7307.19.30.40 as a cast ductile fitting specifically featuring grooved ends for mechanical coupling. This fitting ensures secure, leak-proof connections without welding.
Grooved Ductile Iron Reducing Coupling 4x3-inch
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.
Grooved Ductile Iron 90-Degree Elbow 6-inch
A 90-degree elbow fitting in ductile iron with grooved ends for directional changes in large-diameter piping systems like industrial water lines. HTS 7307.19.30.40 applies due to its cast ductile material and grooved coupling design. Engineered for seismic flexibility in fire protection.
Grooved Ductile Iron Cap 4-inch
A grooved-end ductile iron cap for sealing pipe ends in temporary or dead-end applications. HTS 7307.19.30.40 covers this cast ductile grooved fitting. Provides pressure-tight termination for system maintenance.
Grooved Ductile Iron Long Radius Elbow 3-inch
Long radius 90-degree elbow in ductile iron with grooved ends for reduced flow resistance in process piping. Under HTS 7307.19.30.40 as grooved cast ductile fitting. Ideal for chemical and water treatment plants.
Grooved Ductile Iron Cross Fitting 1-1/2-inch
Four-way cross fitting in ductile iron with all grooved ends for multi-directional pipe intersections. Classified under HTS 7307.19.30.40 as cast grooved-end ductile fitting. Common in complex fire main layouts.