Oil Treatment Equipment
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 8421290015 | 10.0% | CN | US | Official Doc |
| 8421230000 | 37.5% | CN | US | Official Doc |
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π οΈ Oil Treatment Equipment (Oil-Separation Equipment)
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Breakdown | Pro-Level Import Strategy
π One, Product Definition & Classification: What Exactly Is "Oil Treatment Equipment"?
Oil treatment equipment refers to machinery and apparatus specifically designed for separating oil from liquids or gases, particularly in industrial, marine, automotive, and environmental applications. This includes devices used in wastewater treatment, engine oil recycling, hydraulic systems, and fuel purification.
β οΈ Key Distinction:
- Oil-separation equipment (e.g., centrifugal separators, coalescing filters, gravity separators) β Used for removing oil from water or other fluids β HS Code: 8421.29.00.15
- Oil or fuel filters for internal combustion engines β Used in vehicles, generators, machinery β HS Code: 8421.23.00.00
π¦ Two, HS Code Classification Details (2026 Official Tariff Authority)
| HS Code | Product Description | Application Scenarios | Key Features |
|---|---|---|---|
8421.29.00.15 |
Other filtering or purifying machinery and apparatus for liquids: Oil-separation equipment | Industrial wastewater treatment, marine bilge water systems, oil refinery pre-treatment, hydraulic fluid purification | Designed for high-efficiency oil-water separation; often uses centrifugal, coalescing, or membrane technology |
8421.23.00.00 |
Oil or fuel filters for internal combustion engines | Cars, trucks, construction equipment, power generators | Installed in engine systems to remove contaminants from engine oil or fuel |
π Critical Note:
- Do NOT confuse oil-separation equipment with engine oil filters β they serve entirely different purposes and have different HS codes and tariffs.
- Equipment used in marine bilge systems or industrial effluent treatment falls under 8421.29.00.15, even if itβs used on ships.
π° Three, 2026 Latest Tariff Breakdown (Includingιε Taxes & Policy Add-ons)
β Applicable Country: United States (US)
β Origin: China (CN)
β Effective Date: November 10, 2025 (and onward)
π― 1. 8421.29.00.15 β Oil-Separation Equipment
| Item | Details |
|---|---|
| Base Duty Rate | 0.0% (ad valorem) |
| Additional Tariff (USITC) | +25.0% (under Section 301 of U.S. Trade Act) |
| IEEPA Additional Duty | +0.0% (not currently applied to this product) |
| Total Effective Duty | 25.0% |
| Tax Calculation | CIF Value Γ 25.0% |
| De Minimis Threshold | β Not applicable (denied de minimis relief) |
| Legal Basis Path | USITC:8421.29.00.15 β FOOTNOTE:9903.88.01 β Section 301 Tariff List |
π Explanation:
- The 25% additional tariff is imposed under Section 301 of the U.S. Trade Act, targeting Chinese-origin goods deemed to involve unfair trade practices. - This does not apply to non-Chinese origin products β if your equipment is made in Vietnam, Mexico, or Malaysia, you may qualify for tariff exemption. - No IEEPA (International Emergency Economic Powers Act) surcharge applies here β unlike some other industrial machinery.
π― 2. 8421.23.00.00 β Oil or Fuel Filters for Internal Combustion Engines
| Item | Details |
|---|---|
| Base Duty Rate | 0.0% |
| Additional Tariff (USITC) | +0.0% |
| IEEPA Additional Duty | +0.0% |
| Total Effective Duty | 0.0% |
| Tax Calculation | CIF Value Γ 0.0% |
| De Minimis Threshold | β Applicable (up to $800 per shipment) |
| Legal Basis Path | 8421.23.00.00 β No additional footnote |
π Important Note:
- Despite being machinery, engine oil filters are exempt from Section 301 tariffs as of 2025. - This makes 8421.23.00.00 one of the lowest-taxed industrial components in the U.S. market. - No additional surcharges β ideal for cost-sensitive supply chains.
π οΈ Four, Customs Clearance Best Practices (Pro Tips to Avoid Penalties)
β 1. Required Documentation (Must-Have List)
| Document | Required? | Notes |
|---|---|---|
| β Product Specification Sheet | βοΈ | Include material, capacity, separation efficiency, inlet/outlet specs |
| β Technical Diagrams / Flow Charts | βοΈ | Show how oil is separated (e.g., centrifugal vs. coalescing) |
| β Product Photos (with model number & branding) | βοΈ | Clear image of nameplate, connections, housing |
| β Third-Party Test Reports | βοΈ | ISO 16232 (for cleanliness), API 1631 (for oil-water separators), CE/FCC if applicable |
| β Commercial Invoice | βοΈ | Clearly state βOil-Separation Equipmentβ or βOil-Water Separatorβ |
| β Certificate of Origin (CO) | βοΈ | Critical β if from China β 25% tariff; if from Vietnam/Mexico β 0% |
| β Packing List | βοΈ | Show if it's a standalone unit or part of a larger system |
β 2.η³ζ₯ζε·§ (Key Rules to Remember)
π₯ "Separation vs. Filtration: One word changes your tariff!"
| Scenario | Correct HS Code | Wrong Approach |
|---|---|---|
| Centrifugal oil-water separator for ship bilge | 8421.29.00.15 |
Mistakenly declared as 8421.23.00.00 β 0% β underpaid duty |
| Engine oil filter for a diesel truck | 8421.23.00.00 |
Declared as 8421.29.00.15 β 25% β overpaid duty |
| Oil separator with integrated pump | 8421.29.00.15 |
Split into βpumpβ + βseparatorβ β each may face 25% β total 50%+ |
| Used oil reclamation unit | 8421.29.00.15 |
Declared as βscrap metalβ β detention + seizure risk |
β 3. Special Cases & Solutions
| Situation | Recommended Action |
|---|---|
| Equipment made in China but assembled in Vietnam | Apply for Certificate of Origin (Form A) from Vietnam β qualify for 0% tariff |
| Used oil treatment unit (second-hand) | Must be declared as used goods β may face additional scrutiny and higher documentation burden |
| Custom-built oil separator for offshore platform | Apply for Advance Ruling (Pre-Approval) to lock in HS Code and tariff rate |
| Parts for oil separation systems (e.g., filter cartridges) | Check if they are "other parts" β may be subject to 25% tariff if not clearly identified as consumables |
π Five, Global Customs Comparison (2026 Update)
| Country/Region | Recommended HS Code | Tariff Rate | Certification Required | Notes |
|---|---|---|---|---|
| πΊπΈ United States | 8421.29.00.15 |
25.0% (China origin) | EPA, ISO 16232, CE | High tariff if from China |
| π¨π³ China | 8421.29.00.15 |
5.0% | CCC, GB standards | No additional tariffs |
| πͺπΊ European Union | 8421.29.00.15 |
0% (if CE certified) | CE, RoHS, EAC | No Section 301-style tariffs |
| π¦πΊ Australia | 8421.29.00.15 |
5.0% | RCM, ISO | No extra surcharge |
| π―π΅ Japan | 8421.29.00.15 |
0% | PSE, JIS | No additional duties |
π Key Insight:
- The U.S. is the only major market imposing a 25% tariff on oil-separation equipment from China. - Vietnam, Mexico, and Malaysia are safe alternatives for manufacturing to avoid tariffs.
π Six, Common Mistakes & Risk Warnings (Avoid These Traps!)
β Mistake 1: Declaring an oil separator as an βengine filterβ
π Result: Pay 0% β later assessed 25% back duty + penalties
β Mistake 2: Splitting a full oil separator system into βtankβ, βpumpβ, βfilterβ
π Result: Each part gets 25% tariff β total 75%+ β cost disaster
β Mistake 3: Using βfilterβ in the product name without technical context
π Result: Customs may reclassify as 8421.23.00.00 β incorrect tariff β audit risk
β Mistake 4: Not providing technical drawings or flow diagrams
π Result: Delayed clearance, request for additional info, or rejection
β Best Practice:
Use precise, technical language in the invoice:
βCentrifugal Oil-Water Separator, 1000 L/hr, for Marine Bilge Systems, Model XYZ, CE & ISO 16232 Certifiedβ
π― Seven, Conclusion: Precision Pays Off!
π― Remember the Golden Rule:
πΉ βIf it separates oil from water β 8421.29.00.15 β 25% if from Chinaβ
πΉ βIf it filters engine oil β 8421.23.00.00 β 0%β
πΉ βDonβt split systems β one unit, one HS Code, one tariffβ
π Pro Tip:
β Apply for an Advance Ruling (Pre-Approval) before shipping to lock in the correct HS Code and tariff rate.
β Use a trusted customs broker with experience in industrial environmental equipment.
π£ Take Action Now!
π Contact a certified customs broker + submit product specs + request HS Code pre-ruling
π Avoid delays, penalties, and surprise tariffs β ship smart, clear fast, save big!
β¨ Smart Customs Starts with Smart Classification!
πΌ Your next shipmentβs success begins with one correct HS Code.
Customer Reviews
About HS Code Classification
The Harmonized System (HS) is an internationally standardized nomenclature developed by the World Customs Organization (WCO) to classify traded products. Over 200 countries use the HS system as the basis for customs tariffs, trade statistics, and import/export regulations.
Each HS code follows a hierarchical structure:
- Chapter (2 digits) β Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) β More specific grouping within the chapter
- Subheading (6 digits) β Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) β Country-specific extensions for further classification, such as US HTSUS 10-digit codes
Correct HS code classification is essential for smooth customs clearance, accurate duty payment, and compliance with trade regulations. Misclassification can lead to customs delays, overpayment of duties, or penalties.
When importing from CN to US, the applicable tariff rates may include:
- Most-Favored-Nation (MFN) rate β The standard duty rate applied to WTO members
- General rate β Applied to countries without trade agreements
- Trade remedy duties β Additional tariffs such as Section 301 (anti-dumping), Section 232 (national security), or countervailing duties
The information provided on this page is for reference purposes only. For official classification, please consult with your local customs authority or a licensed customs broker.