Found 11 matching results
(CN → US)
| HS Code | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
|---|---|---|---|---|---|
| 3910000000 | Doc | 58.0% | CN | US | 2025-05-12 |
| 3917320050 | Doc | 58.1% | CN | US | 2025-05-12 |
| 3917390050 | Doc | 33.1% | CN | US | 2025-05-12 |
| 4009410000 | Doc | 57.5% | CN | US | 2025-05-12 |
| 4009420050 | Doc | 40.0% | CN | US | 2025-05-12 |
| 4016990500 | Doc | 40.9% | CN | US | 2025-05-12 |
| 4016995500 | Doc | 57.5% | CN | US | 2025-05-12 |
| 8481805090 | Doc | 58.0% | CN | US | 2025-05-12 |
| 8481805090 | Doc | 58.0% | CN | US | 2025-05-12 |
| 8484100000 | Doc | 57.5% | CN | US | 2025-05-12 |
| 8484900000 | Doc | 57.5% | CN | US | 2025-05-12 |
Silicone Pipe Sheath
A silicone pipe sheath is a protective covering for pipes, typically constructed from silicone rubber. These sheaths are employed across a diverse range of applications to safeguard pipes from various environmental factors and enhance operational efficiency.
Material:
The primary material is silicone rubber, notable for its:
- Temperature Resistance: Withstands a broad spectrum of temperatures, generally from -60°C to +260°C (-76°F to +500°F), although specific grades can extend beyond these limits.
- Chemical Inertness: Exhibits resistance to many chemicals, acids, bases, and solvents.
- Flexibility: Remains pliable even at low temperatures, allowing for easy installation and accommodating pipe movement.
- Electrical Insulation: Possesses excellent dielectric properties.
- UV and Ozone Resistance: Resistant to degradation from ultraviolet radiation and ozone exposure.
- Water Resistance: Impermeable to water and moisture.
Purpose:
The primary purposes of using silicone pipe sheaths include:
- Corrosion Protection: Shields pipes from corrosive substances in the surrounding environment.
- Abrasion Resistance: Protects pipes from physical wear and tear, especially in demanding industrial settings.
- Insulation: Provides thermal insulation, maintaining pipe temperatures and preventing heat loss or gain.
- Noise Reduction: Dampens vibrations and reduces noise generated by fluid flow within the pipes.
- Leak Prevention: Acts as a secondary containment layer to prevent leaks in case of pipe damage.
- Identification: Colored sheaths can be used to identify pipe contents or flow direction.
Function:
Silicone pipe sheaths function by creating a barrier between the pipe and its external environment. This barrier provides:
- Physical Protection: The sheath absorbs impacts and prevents direct contact with abrasive materials.
- Chemical Barrier: The silicone material prevents corrosive substances from reaching the pipe surface.
- Thermal Barrier: The sheath reduces heat transfer, maintaining the temperature of the fluid within the pipe.
- Sealing: Overlapping designs or integrated seals prevent fluid leakage.
Usage Scenarios:
- Industrial Piping: Protecting pipes in chemical processing plants, refineries, and manufacturing facilities.
- HVAC Systems: Insulating pipes in heating, ventilation, and air conditioning systems.
- Automotive Industry: Protecting coolant and fuel lines.
- Plumbing: Insulating hot water pipes and protecting against corrosion.
- Medical Applications: Protecting tubing and pipes in medical devices and equipment (using medical-grade silicone).
- Food and Beverage Industry: Protecting pipes used in food processing and handling (using food-grade silicone).
Common Types:
- Continuous Length Sheathing: Supplied as a long tube that is cut to length and applied over the pipe.
- Wrap-Around Sheathing: Consists of a silicone sheet with an overlapping flap and adhesive backing for easy installation.
- Heat-Shrink Sheathing: Expands when heated and contracts to tightly fit the pipe as it cools.
- Reinforced Sheathing: Incorporates a fabric reinforcement layer for increased strength and durability.
- Fiberglass Sleeves with Silicone Coating: Offers high-temperature protection and flexibility.
- Medical Grade Silicone Sheaths: Specifically formulated for biocompatibility and sterilization in medical applications.
The declared goods, “silicone pipe sheath,” can be classified under the following HS codes based on the provided reference material:
- 3910.00.00.00: This HS code covers Silicones in primary forms. This would apply if the sheath is being imported as a raw material or a basic silicone form before further processing or shaping.
- 3917.32.00.50: This HS code covers Tubes, pipes and hoses and fittings therefor (for example, joints, elbows, flanges), of plastics: Other tubes, pipes and hoses: Other, not reinforced or otherwise combined with other materials, without fittings. If the silicone pipe sheath is made of plastic and is not reinforced or combined with other materials and does not include fittings, this code applies.
- 4009.41.00.00: This HS code covers Tubes, pipes and hoses, of vulcanized rubber other than hard rubber, with or without their fittings (for example, joints, elbows, flanges): Reinforced or otherwise combined with other materials: Without fittings. If the sheath is made of vulcanized rubber (other than hard rubber) and is reinforced or combined with other materials but does not have fittings, this code is applicable.
Tax Rate Details:
- 3910.00.00.00: Base tariff: 3.0%, Additional tariff: 25.0%, Post-April 2, 2025, additional tariff: 30.0%. Total tariff: 58.0%.
- 3917.32.00.50: Base tariff: 3.1%, Additional tariff: 25.0%, Post-April 2, 2025, additional tariff: 30.0%. Total tariff: 58.1%.
- 4009.41.00.00: Base tariff: 2.5%, Additional tariff: 25.0%, Post-April 2, 2025, additional tariff: 30.0%. Total tariff: 57.5%.
Important Considerations:
It is crucial to determine the exact material composition of the silicone pipe sheath (silicone in primary form vs. vulcanized rubber) and whether it is reinforced or combined with other materials to select the correct HS code. If the sheath includes fittings (joints, elbows, flanges), other HS codes within the 4009 or 3917 series may be more appropriate.