oil separator
CN → US| HS编码 | 关税税率 | 原产国 | 目的国 | 文档 |
|---|---|---|---|---|
| 8481301090 | 38.0% | CN | US | 官方文档 |
| 8481200050 | 37.0% | CN | US | 官方文档 |
| 8421290015 | 35.0% | CN | US | 官方文档 |
| 8421290040 | 35.0% | CN | US | 官方文档 |
商品图片
AI分析
🔧 Oil Separator (Hydraulic Fluid Oil-Water Separator)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
📌 Part 1: Product Definition & Classification: What exactly is an "Oil Separator"?
In the context of international trade, an "Oil Separator" (specifically identified here as a Hydraulic Fluid Oil-Water Separator) is a critical component for fluid purification systems. It functions to separate water and solid contaminants from hydraulic oils or lubricating fluids.
The classification depends heavily on Function vs. Structure: * Functional Classification (Filtering/Purifying): If the device is primarily seen as a filtration device for liquids (removing oil/water mixtures), it falls under Chapter 8421 (Centrifuges, Filtering/Purifying Machinery). * Structural/Component Classification (Valves/Hydraulic Components): If the device is viewed as part of a hydraulic control system or a mechanical valve assembly, it may fall under Chapter 8481 (Tap, Cock, Valve...).
⚠️ Key Distinction:
- If the primary purpose is "Separating/Purifying Liquid" → Look at 8421.29.00.
- If the primary purpose is "Hydraulic System Component/Valve" → Look at 8481.20.00 or 8481.30.10.
- If the material is unspecified, metal composition is generally assumed, avoiding conflicts with non-metallic exclusions.
📦 Part 2: HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Application Scenario | Primary Function |
|---|---|---|---|
8421.29.00.15 |
Other machinery and apparatus for filtering or purifying liquids (excluding centrifuges) | Oil-Water Separator for hydraulic systems; functional focus on "purifying oil". | ✅ Filtering/Purifying (De-oiling) |
8421.29.00.40 |
Other hydraulic fluid power filters and purifiers | Hydraulic fluid power systems; specific filters for hydraulic dynamics. | ✅ Hydraulic Fluid Purification |
8481.20.00.50 |
Hydraulic valves and other hydraulic valves | Hydraulic System Components; focuses on the "Hydraulic Valve/Assembly" aspect. | ✅ Hydraulic Control/Handling |
8481.30.10.90 |
Pressure-reducing valves and pressure-reducing stations | Mechanical Parts/Valves; general mechanical use, metallic parts assumption. | ✅ Mechanical Valve/Part |
🔍 Key Reminder:
- 8421 Codes: Best for devices explicitly named "Separator" or "Filter" where the fluid purification is the main selling point. - 8481 Codes: Best for components that are integrated valves within a hydraulic circuit, where the mechanical structure is emphasized. - Material Assumption: Since material is not specified, standard industry practice assumes metal/alloy construction, which is compatible with all these codes.
💰 Part 3: 2026 Latest Tariff Rate Breakdown (Including Surtaxes & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Country of Origin: China (CN)
✅ Effective Date: 2025 Nov 10 onwards (including subsequent imports)
🎯 1. 8421.29.00.15 & 8421.29.00.40 —— Oil/Water Separators & Hydraulic Fluid Filters
These codes benefit from a lower Base Duty but are still subject to significant surtaxes.
| Item | Content |
|---|---|
| Base Duty Rate | 0.0% (Ad valorem) |
| Section 301 Surcharge | +25.0% (Add-on Tariff) |
| Section 122 Tariff | +10.0% (Specific 122 Clause Tariff) |
| Total Tax Rate | 35.0% |
| Tax Calculation | CIF Value × 35% |
| De Minimis Eligibility | ❌ No (deny_de_minimis) |
| Legal Basis Path | Base: 0% → USITC: 25% → 122 Clause: 10% |
📌 Explanation:
- The 0% base duty makes these codes attractive compared to mechanical parts. - However, the 25% Section 301 tariff (trade war related) and 10% Section 122 tariff (national security-related) still apply. - Total 35% is a moderate-high burden, but lower than mechanical valve codes.
🎯 2. 8481.20.00.50 —— Hydraulic Valves / Hydraulic Components
| Item | Content |
|---|---|
| Base Duty Rate | 2.0% |
| Section 301 Surcharge | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tax Rate | 37.0% |
| Tax Calculation | CIF Value × 37% |
| De Minimis Eligibility | ❌ No |
| Legal Basis Path | Base: 2.0% → USITC: 25% → 122 Clause: 10% |
📌 Note:
- Classified as a Hydraulic Valve/Component. - The 2% base duty is slightly higher than the filter codes, but the surtaxes are identical. - Total 37%.
🎯 3. 8481.30.10.90 —— Pressure-Reducing Valves / Mechanical Parts
| Item | Content |
|---|---|
| Base Duty Rate | 3.0% |
| Section 301 Surcharge | +25.0% |
| Section 122 Tariff | +10.0% |
| Total Tax Rate | 38.0% |
| Tax Calculation | CIF Value × 38% |
| De Minimis Eligibility | ❌ No |
| Legal Basis Path | Base: 3.0% → USITC: 25% → 122 Clause: 10% |
📌 Note:
- Classified under general Mechanical Valves/Parts. - Has the highest base duty (3%) among the suggested codes. - Total 38%.
🛠️ Part 4: Customs Clearance Practical Advice (实战避坑指南)
✅ 1. Documentation Checklist (Must-Have)
| Document | Required? | Description |
|---|---|---|
| ✅ Product Specification Sheet | ✔️ | Must clearly state "Oil-Water Separator" or "Hydraulic Filter". |
| ✅ Technical Data Sheet | ✔️ | Include flow rate, pressure rating, separation efficiency. |
| ✅ Product Photos | ✔️ | Clear images of the unit, labels, and connection ports. |
| ✅ Commercial Invoice | ✔️ | Use precise terminology: "Oil-Water Separator for Hydraulic Systems" (preferred for 8421) or "Hydraulic Valve Assembly" (for 8481). |
| ✅ Packing List | ✔️ | Detail components to avoid "missing parts" flags. |
| ✅ Origin Certificate | ❓ | If not China-origin, may apply for exemptions (but US-China origin is common here). |
✅ 2. Declaration Strategy (Key Mantras)
🔥 "Function First: Filter vs. Valve!"
| Scenario | Recommended HS Code | Reasoning |
|---|---|---|
| Explicitly "Oil-Water Separator" | 8421.29.00.15 |
Best Choice: Focuses on the separation/purification function. Lowest base duty (0%). |
| Hydraulic System Filter Element | 8421.29.00.40 |
Focuses on hydraulic fluid purification. Low base duty (0%). |
| Integrated Hydraulic Valve Block | 8481.20.00.50 |
Use if it's a control valve rather than a standalone filter. |
| Generic Mechanical Part/Valve | 8481.30.10.90 |
Only use if no specific hydraulic/functional description applies. Highest risk of higher duty. |
📌 Critical Tip:
- Do NOT declare as "Part of Machine" (Generic) if it has a clear functional purpose. - Use "Filter" or "Separator" keywords in the description to justify 8421 classification, which saves 2-3% base duty.
✅ 3. Special Circumstances Handling
| Situation | Handling Advice |
|---|---|
| OEM Customized Separator | Provide client specs + design drawings. Emphasize purification function in documentation. |
| Packaged with Hydraulic Pump | If shipped as a complete unit, consider classifying the main function of the set. However, separable units are usually classified individually. |
| Material Ambiguity | If not specified, assume Metal. This avoids conflict with plastic/resin exclusions in some subheadings. |
🌍 Part 5: Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Est. Duty (China Origin) | Certification | Remarks |
|---|---|---|---|---|
| 🇺🇸 USA | 8421.29.00.15 |
35% (0% Base + 25% + 10%) | N/A (No specific cert required for this HS) | Best option for separators. |
| 🇺🇸 USA | 8481.20.00.50 |
37% | N/A | Higher base duty. |
| 🇨🇳 China | 8421.29.00.15 |
5-8% (Est.) | CCC (if applicable) | No Section 301/122 tariffs. |
| 🇪🇺 EU | 8421.29.00 |
~1.5-4.5% | CE, RoHS | No major surtaxes. |
| 🇬🇧 UK | 8421.29.00 |
~3-5% | UKCA | Post-Brexit rules apply. |
📌 Conclusion:
- USA is the most challenging market due to 35%+ total tariffs. - 8421.29.00.15 is the optimal HS Code for clearance in the US due to its 0% base duty.
📌 Part 6: Common Mistakes & Pitfalls (Lessons Learned)
❌ Mistake 1: Declaring as "Mechanical Part" (8481.30) when it's clearly a Filter
👉 Consequence: 38% duty instead of 35%. Unnecessary cost increase.
❌ Mistake 2: Misdeclaring as "Valve" (8481.20) for a standalone Separator
👉 Consequence: 37% duty and potential Customs audit for functional misclassification.
❌ Mistake 3: Ignoring "Section 122 Tariff" in cost calculation
👉 Consequence: Underquoting by 10%, leading to budget overruns and profit loss.
❌ Mistake 4: Vague Description ("Oil Filter")
👉 Consequence: Customs may question the classification.
✅ Correct Practice:
"Hydraulic Oil-Water Separator, Metal Body, 10 Micron Filtration, Model XYZ, for Industrial Hydraulic Systems"
🎯 Part 7: Conclusion: Precise Classification Saves Money!
🎯 Remember the Mantra:
🔹 "Filter = 8421 = 0% Base = 35% Total"
🔹 "Valve = 8481 = 2-3% Base = 37-38% Total"
🔹 "Function First, Duty Second!"
📌 Pro Tip:
For Oil Separators, always try to justify the 8421 classification (Filtering/Purifying Machinery) over 8481 (Valves). The 3% difference in base duty is pure profit.
📣 Immediate Action:
📞 Confirm with your supplier: Is this a Filter/Separator or a Valve?
🚀 Use HS Code 8421.29.00.15 for the most cost-effective clearance in the US.
✨ Professional Clearance Starts with Accurate Classification!
💼 Every Percentage Point Counts!
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关于 HS 编码归类
协调制度（HS）是由世界海关组织（WCO）制定的国际贸易商品分类标准。全球 200 多个国家采用 HS 系统作为海关关税、贸易统计和进出口监管的基础。
每个 HS 编码遵循以下层级结构：
- 章（2 位）——商品大类（例如：第 84 章：机器和机械设备）
- 品目（4 位）——章内的更具体分类
- 子目（6 位）——国际通用细分，所有 WCO 成员国统一使用
- 本国细分（8-10 位）——各国自行扩展的细分编码，如美国 HTSUS 10 位编码
正确的 HS 编码归类对于顺利通关、准确缴纳关税和遵守贸易法规至关重要。错误归类可能导致海关延误、多缴关税或罚款。
从CN进口到US时，适用的关税税率可能包括：
- 最惠国（MFN）税率——适用于 WTO 成员国的标准关税税率
- 普通税率——适用于无贸易协定国家
- 贸易救济关税——附加关税，如 301 条款（反倾销）、232 条款（国家安全）或反补贴税
本页内容仅供参考。如需正式归类，请咨询当地海关或持牌报关代理。