| HS Code | Product Description | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
|---|---|---|---|---|---|---|
| 7411101030 | Copper tubes and pipes: Of refined copper: Seamless Having an outside diameter of 6 mm or more but not exceeding 16 mm, in coils on spools | Doc | 56.5% | CN | US | 2025-05-12 |
| 7411105000 | Copper tubes and pipes: Of refined copper: Other | Doc | 58.0% | CN | US | 2025-05-12 |
Copper Pipe
Copper pipe is a tube made of copper, used to transport fluids and gases. It is widely recognized for its excellent properties, making it a common choice in various applications, particularly in plumbing, heating, ventilation, and air conditioning (HVAC) systems.
Material
Copper pipes are typically manufactured from various copper alloys, with the most common being:
- Type K: Thickest wall, most durable, used for underground and direct burial applications, as well as for demanding applications like water mains.
- Type L: Medium wall thickness, commonly used for interior water distribution.
- Type M: Thinnest wall, most common for residential water lines.
- DWV (Drain, Waste, and Vent): Specifically designed for non-pressure drainage, waste, and vent systems.
The copper used is often alloyed with zinc to improve its properties and workability.
Purpose
The primary purpose of copper pipe is to convey fluids and gases safely and efficiently. Specific applications include:
- Potable Water Systems: Delivering clean drinking water within buildings.
- Heating Systems: Circulating hot water or steam for radiators, baseboard heaters, and radiant floor heating.
- Refrigeration: Transporting refrigerant in air conditioning and refrigeration systems.
- HVAC Systems: Distributing chilled water for cooling.
- Medical Gas Systems: Delivering gases like oxygen and nitrous oxide in healthcare facilities.
- Industrial Processes: Used in various industrial applications for fluid and gas transfer.
Function
Copper pipe functions by providing a sealed conduit for fluid or gas transport. Its key functional attributes include:
- Corrosion Resistance: Copper naturally resists corrosion, preventing contamination of the transported fluid and ensuring long service life.
- Heat Transfer: Copper’s high thermal conductivity facilitates efficient heat transfer in heating and cooling systems.
- Ductility & Malleability: Copper's ability to be bent and formed without breaking simplifies installation and allows for complex routing.
- Leak Resistance: When properly joined, copper pipe creates a watertight seal, minimizing leaks and ensuring system efficiency.
- Antimicrobial Properties: Copper exhibits inherent antimicrobial properties, inhibiting the growth of bacteria and other microorganisms.
Usage Scenarios
- Residential Plumbing: Water supply lines, drain lines, and heating systems in homes.
- Commercial Buildings: Large-scale water distribution, HVAC systems, and fire sprinkler systems.
- Industrial Facilities: Process piping for various fluids and gases.
- Healthcare Facilities: Medical gas pipelines and plumbing systems.
- Geothermal Systems: Ground loop piping for heat exchange.
Common Types & Joining Methods
| Pipe Type | Wall Thickness | Common Applications | Joining Methods |
|---|---|---|---|
| Type K | Thickest | Underground, Demanding Applications | Soldering, Brazing, Flaring, Compression Fittings |
| Type L | Medium | Interior Water Distribution | Soldering, Brazing, Compression Fittings |
| Type M | Thinnest | Residential Water Lines | Soldering, Compression Fittings |
| DWV | Varies | Drainage, Waste, Vent | Soldering, Brazing, Compression Fittings, Mechanical Joints |
Joining Methods:
- Soldering: Uses a lower-melting-point alloy to create a joint. Common for smaller diameter pipes.
- Brazing: Uses a higher-melting-point alloy for stronger joints, suitable for larger diameters and higher pressures.
- Compression Fittings: Use a compression ring to create a seal without soldering or brazing. Useful for repairs and modifications.
- Flaring: Creates a flared end on the pipe to create a seal with a flared fitting. Common for refrigerant lines.
- Mechanical Joints: Utilize couplings and fittings to connect pipes without soldering or brazing.
Copper pipes are tubes or hollow cylinders made of refined copper, commonly used for conveying fluids, gases, or heat. They find applications in plumbing, heating, ventilation, air conditioning, and various industrial processes.
The following HS codes are relevant based on the provided information:
- 7411.10.10.30: This HS code covers copper tubes and pipes of refined copper, specifically seamless tubes having an outside diameter of 6 mm or more but not exceeding 16 mm, and supplied in coils on spools. The basic tariff is 1.5%, with an additional tariff of 25.0%. After April 2, 2025, the additional tariff increases to 30.0%, resulting in a total tariff of 56.5%.
- 7411.10.50.00: This HS code also covers copper tubes and pipes of refined copper, but refers to other types not specifically defined as seamless tubes in coils on spools with a diameter of 6-16mm. The basic tariff is 3.0%, with an additional tariff of 25.0%. After April 2, 2025, the additional tariff increases to 30.0%, resulting in a total tariff of 58.0%.
Note: The applicable tariff rate depends on the specific characteristics of the copper pipe, particularly its manufacturing method (seamless vs. other) and dimensions (diameter and form of supply).