Aluminum Alloy Round Pipe 4 inch Diameter
Extruded hollow round profile from aluminum alloy, ideal for fluid conveyance or structural pillars in construction. Classified under 7604.21.00 due to its hollow circular cross-section and alloy composition predominated by aluminum.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If designed for use in pressure applications like hydraulics
Hollow profiles meeting tube specifications for pressure service move to Chapter 76 tubing headings.
If of unalloyed high-purity aluminum
Purity over 99% aluminum without alloying elements places it in unalloyed hollow profiles.
If internally machined for specific mechanical fittings
Advanced machining transforms basic profiles into finished tubes of aluminum alloys under iron/steel-like headings.
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Import Tips & Compliance
• Obtain chemical analysis reports confirming aluminum alloy status per Chapter 76 notes to avoid disputes over purity
• Measure and document internal/external dimensions to distinguish from tubes under 7608 if pressure-rated
• Check for any machining or fabrication that might reclassify as 'articles' under 7616.99
Related Products under HTS 7604.21.00
Aluminum Alloy Square Tube 2x2 inch
A hollow square profile made from aluminum alloy, typically used in structural frameworks and machine guards. It qualifies under HTS 7604.21.00 as a hollow profile of aluminum alloys, featuring a uniform wall thickness and extruded construction for strength.
Aluminum Alloy Rectangular Hollow Section 3x1.5 inch
Hollow rectangular profile extruded from aluminum alloy, commonly used in architectural facades and handrails. Falls under HTS 7604.21.00 as it is a basic extruded hollow profile of alloyed aluminum.
6063-T5 Aluminum Alloy Hollow Bar 2 inch OD
Hollow round profile in 6063-T5 aluminum alloy, used for telescoping poles and furniture frames. HTS 7604.21.00 applies to this extruded alloy hollow profile with precise tolerances.
Aluminum Alloy Telescopic Tube Profile
Hollow cylindrical profile designed for sliding fit in telescopic applications like antenna masts. Classified in 7604.21.00 for its basic extruded hollow alloy form prior to assembly.
7075-T6 Aluminum Alloy Hollow Structural Section
High-strength hollow D-shaped profile in 7075-T6 alloy for aerospace and defense structures. HTS 7604.21.00 covers this extruded hollow profile of aluminum alloys.
Aluminum Alloy HVAC Duct Profile
Hollow rectangular profile extruded for HVAC ducting systems in commercial buildings. Qualifies under 7604.21.00 as an aluminum alloy hollow profile used in construction.