HS Code | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
---|---|---|---|---|---|
7608100030 | Doc | 35.7% | CN | US | 2025-05-12 |
7608100090 | Doc | 35.7% | CN | US | 2025-05-12 |
7609000000 | Doc | 35.7% | CN | US | 2025-05-12 |
7609000000 | Doc | 35.7% | CN | US | 2025-05-12 |
8307903000 | Doc | 58.8% | CN | US | 2025-05-12 |
8307906000 | Doc | 58.8% | CN | US | 2025-05-12 |
8311900000 | Doc | 55.0% | CN | US | 2025-05-12 |
铝管
铝管 (lǚ gǔan) refers to a hollow extruded section of aluminum alloy. It is a versatile material widely used across numerous industries due to its lightweight nature, corrosion resistance, and formability.
Material
Aluminum tubes are primarily manufactured from various aluminum alloys, each offering distinct properties. Common alloys include:
- 1100, 3003: High purity, excellent corrosion resistance, good workability. Often used for general purpose applications.
- 5052: Higher strength than 1100/3003, good weldability, excellent corrosion resistance, particularly in marine environments.
- 6061: Heat treatable, offering high strength, good corrosion resistance, and weldability. Frequently used for structural applications.
- 6063: Excellent extrusion properties, good surface finish, commonly used for architectural applications and heat sinks.
- 7075: Highest strength aluminum alloy, used in high-stress applications, but with lower corrosion resistance.
The specific alloy chosen depends on the intended application and required mechanical properties.
Purpose & Function
Aluminum tubes serve a wide array of purposes, primarily leveraging their strength-to-weight ratio and corrosion resistance. Key functions include:
- Structural Support: Providing lightweight yet strong support in frameworks, scaffolding, and vehicle structures.
- Fluid Transport: Conveying liquids and gases in plumbing, hydraulic systems, and pneumatic systems.
- Heat Transfer: Used in heat exchangers, radiators, and condensers due to aluminum’s excellent thermal conductivity.
- Protective Enclosure: Protecting cables, wires, and sensitive components.
- Aesthetic Components: Used in furniture, handrails, and decorative elements.
Usage Scenarios
- Construction: Scaffolding, handrails, roofing supports, solar panel frames.
- Automotive: Fuel lines, brake lines, chassis components, suspension parts.
- Aerospace: Aircraft structures, hydraulic lines, heat exchangers.
- HVAC/Refrigeration: Refrigerant lines, heat exchangers, air conditioning components.
- Plumbing: Water pipes, gas lines.
- Furniture: Chair frames, table legs.
- Medical: Oxygen tanks, IV poles.
- Packaging: Aerosol cans, collapsible tubes.
- Irrigation: Sprinkler systems, irrigation lines.
Common Types
Aluminum tubes are categorized based on their manufacturing process, shape, and temper:
- Seamless Tubes: Manufactured by extrusion or drawing, offering high strength and pressure resistance.
- Welded Tubes: More cost-effective, manufactured by welding aluminum strips or sheets.
- Round Tubes: The most common shape, providing uniform strength in all directions.
- Square Tubes: Offer higher rigidity and are suitable for structural applications.
- Rectangular Tubes: Similar to square tubes, providing specific dimensional requirements.
- Hydraulic Tubing: Specifically manufactured for hydraulic systems, meeting stringent pressure and dimensional tolerances.
- Condenser/Evaporator Tubing: Designed for heat transfer applications, often with fins for increased surface area.
- Temper: Aluminum tubes are available in various tempers (e.g., O, T4, T6), affecting their strength and ductility. T6 temper provides the highest strength through heat treatment.
铝管的归类取决于其具体属性,例如是否为合金、是否无缝以及用途。以下是根据您提供的信息,可能适用的HS编码:
- 7608100030:
- 76: 铝制品。
- 08: 铝管和铝型材。
- 100030: 无合金铝管。适用于描述非合金铝管。基础关税为5.7%,加征关税为0.0%,2025年4月2日后加征关税为30.0%,总税率为35.7%。
- 7608100090:
- 76: 铝制品。
- 08: 铝管和铝型材。
- 100090: 非合金铝管(其他)。适用于描述非合金铝管,但与7608100030有所区分。基础关税为5.7%,加征关税为0.0%,2025年4月2日后加征关税为30.0%,总税率为35.7%。
- 8307903000:
- 83: 金属制品,包括紧固件、螺钉和螺母等。
- 07: 柔性金属管,带或不带接头。
- 903000: 其他基础金属制柔性金属管,带接头。适用于描述带接头的其他基础金属制柔性铝管。基础关税为3.8%,加征关税为25.0%,2025年4月2日后加征关税为30.0%,总税率为58.8%。
- 8307906000:
- 83: 金属制品,包括紧固件、螺钉和螺母等。
- 07: 柔性金属管,带或不带接头。
- 906000: 其他基础金属制柔性金属管,不带接头。适用于描述不带接头的其他基础金属制柔性铝管。基础关税为3.8%,加征关税为25.0%,2025年4月2日后加征关税为30.0%,总税率为58.8%。
请根据铝管的具体属性(例如是否无缝、是否带接头、是否为合金)选择最合适的HS编码。