Welding Protection Agent
CN → US| HS编码 | 关税税率 | 原产国 | 目的国 | 文档 |
|---|---|---|---|---|
| 3810100000 | 40.0% | CN | US | 官方文档 |
| 3811190000 | 41.5% | CN | US | 官方文档 |
| 3810901000 | 41.5% | CN | US | 官方文档 |
| 3811900000 | 41.5% | CN | US | 官方文档 |
| 3810100000 | 40.0% | CN | US | 官方文档 |
商品图片
AI分析
🔥 Welding Protection Agent (Flux & Shielding Compounds)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional-Level Clearance Strategy
📌 I. Product Definition & Classification: What Exactly is a "Welding Protection Agent"?
A Welding Protection Agent (commonly known as Flux or Welding Compound) is a chemical substance used during welding, brazing, or soldering to prevent oxidation, remove existing oxides, and facilitate the flow of molten metal.
In international trade, these agents are not a single monolithic category but are classified based on their chemical composition and specific function:
- Core Welding Fluxes (Chapter 38.10): Specifically designed for use with welding, brazing, or soldering. These are the most direct classification for standard welding aids.
- Chemical Preparations/Adjuvants (Chapter 38.11): If the product contains anti-pollution preparations, viscosity improvers, or other chemical additives that do not fit strictly into the "flux" definition but are prepared for industrial use, they may fall here.
⚠️ Key Distinction Point:
- If the product is primarily a flux for preventing oxidation during welding → Chapter 38.10 (e.g.,3810.10.00.00or3810.90.10.00).
- If the product is a general chemical preparation/adjuvant for mineral oils or similar liquids, or contains complex anti-explosive/chemical additive properties → Chapter 38.11 (e.g.,3811.19.00.00or3811.90.00.00).
📦 II. HS Code Classification Details (2026 Latest Tariff Authoritative Comparison)
| HS Code | Product Description | Application Scenario | Chemical Nature |
|---|---|---|---|
3810.10.00.00 |
Welding fluxes; preparations for cores or coatings for welding wire | Standard welding aids, metal surface treatment, pre-coated welding wires | ✅ Core Flux (Metal surface treatment) |
3810.90.10.00 |
Other preparations for use with welding, brazing, or soldering | Specific welding aids not covered by 3810.10, general chemical welding agents | ✅ Other Welding Chemicals |
3811.19.00.00 |
Anti-pollution preparations, viscosity index improvers, and other chemical preparations for mineral oils or similar liquids | Welding fluxes with complex chemical additives, anti-bumping agents, or formulated adjuvants | ✅ Chemical Adjuvant |
3811.90.00.00 |
Other preparations for mineral oils or similar liquids (not including anti-pollution preparations) | General chemical preparations used as additives in welding processes, mineral oil-based welding aids | ✅ General Chemical Preparation |
🔍 Key Reminder:
- Products explicitly described as "Welding Flux" or "Welding Aids" should ideally be classified under 3810.
- If the product is a formulated chemical mixture that acts as an adjuvant for mineral oils or contains specific chemical additives (like anti-explosives), it may be classified under 3811.
- Do not misclassify as "general chemicals" (e.g., Chapter 38.08) unless no specific welding-related heading applies.
💰 III. 2026 Latest Tariff Rate Detailed Explanation (Including Surcharges & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Country of Origin: China (CN)
✅ Effective Date: From November 10, 2025 (including subsequent imports)
🎯 1. 3810.10.00.00 —— Welding Fluxes (Core Fluxes)
| Item | Content |
|---|---|
| Base Tariff Rate | 5.0% (ad valorem) |
| Section 301 Surcharge | +25% |
| Section 122 Tariff | +10% (Specific 122 Clause) |
| Total Tariff Rate | 40.0% |
| Tax Calculation | CIF Value × 40.0% |
| De Minimis Exemption Eligible? | ❌ No (deny_de_minimis) |
| Legal Basis Path | Base: 3810.10.00.00 → Section 301: +25% → Section 122: +10% |
📌 Explanation:
- This is the most common classification for standard welding fluxes.
- The Section 301 Surcharge (25%) applies to all Chinese-origin goods under this heading.
- The Section 122 Tariff (10%) is an additional duty applicable to certain chemical preparations from China.
- Total 40% is a significant cost factor. Pre-clearance and accurate documentation are crucial.
🎯 2. 3810.90.10.00 —— Other Welding Preparations
| Item | Content |
|---|---|
| Base Tariff Rate | 6.5% (ad valorem) |
| Section 301 Surcharge | +25% |
| Section 122 Tariff | +10% (Specific 122 Clause) |
| Total Tariff Rate | 41.5% |
| Tax Calculation | CIF Value × 41.5% |
| De Minimis Exemption Eligible? | ❌ No (deny_de_minimis) |
| Legal Basis Path | Base: 3810.90.10.00 → Section 301: +25% → Section 122: +10% |
📌 Explanation:
- This heading covers other welding-related chemical preparations not classified as core fluxes under 3810.10.
- The base rate is slightly higher (6.5% vs 5.0%), leading to a total of 41.5%.
🎯 3. 3811.19.00.00 & 3811.90.00.00 —— Chemical Preparations/Adjuvants
| Item | Content |
|---|---|
| Base Tariff Rate | 6.5% (ad valorem) |
| Section 301 Surcharge | +25% |
| Section 122 Tariff | +10% (Specific 122 Clause) |
| Total Tariff Rate | 41.5% |
| Tax Calculation | CIF Value × 41.5% |
| De Minimis Exemption Eligible? | ❌ No (deny_de_minimis) |
| Legal Basis Path | Base: 3811.19.00.00 / 3811.90.00.00 → Section 301: +25% → Section 122: +10% |
📌 Explanation:
- If customs determines the product is a chemical adjuvant or formulated preparation rather than a pure flux, it falls here.
- The total rate is 41.5%, same as3810.90.10.00.
- Key Risk: Misclassification as a general chemical (lower base rate) can lead to audits and penalties if the "welding" function is evident.
🛠️ IV. Customs Clearance Practical Advice (Real-World Pitfall Avoidance Guide)
✅ 1. Required Documentation Checklist (All Mandatory)
| Document | Must Provide | Description |
|---|---|---|
| ✅ Product Specification Sheet | ✔️ | Detailed chemical composition, PH value, viscosity, melting point. |
| ✅ Safety Data Sheet (SDS) | ✔️ | Crucial for chemical clearance. Must indicate flammability, toxicity, and handling instructions. |
| ✅ Product Photos | ✔️ | Clear images of packaging, labels, and product form (powder, liquid, paste). |
| ✅ Commercial Invoice | ✔️ | Must clearly state "Welding Flux" or "Welding Protection Agent" and HS Code. |
| ✅ Packing List | ✔️ | Details net/gross weight, dimensions, and packaging type. |
| ✅ Origin Certificate (CO) | ✔️ | Required for Section 301 and 122 duty assessments. |
| ✅ Third-Party Test Report | ✔️ | Lab tests confirming chemical composition (e.g., halide content, acid value). |
✅ 2. Declaration Tips (Key Mantra)
🔥 "Function First, Chemistry Second, Name Precise, Duties Predictable!"
| Scenario | Correct Declaration Method | Incorrect Practice |
|---|---|---|
| Standard Welding Flux | 3810.10.00.00 (Welding Fluxes) |
Misreporting as "General Chemical" → 25-30% risk of penalty |
| Complex Welding Aid with Additives | 3810.90.10.00 or 3811.19.00.00 |
Over-simplifying to "Chemical Mixture" → Ambiguity |
| Mineral Oil-Based Welding Lubricant | 3811.90.00.00 |
Misreporting as 3810 → Potential reclassification audit |
| Raw Chemicals (Not Prepared) | Chapter 28/29 (Not in data) | Misreporting as 3810 → Incorrect classification |
✅ 3. Special Case Handling
| Scenario | Handling Advice |
|---|---|
| OEM Custom Flux | Provide client order + formulation sheet to prove specific welding use. |
| Liquid vs. Powder | Clearly state physical state in description. Liquid fluxes may have different SDS requirements. |
| Halogen-Free Flux | Highlight "Halogen-Free" in declaration. May face less scrutiny from environmental customs. |
| High-Activity Acid Flux | Ensure SDS clearly states corrosiveness. May require additional hazmat documentation. |
🌍 V. Global Market Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff Rate (CN Origin) | Certification Requirements | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 3810.10.00.00 |
40.0% (incl. 301 & 122) | None specific, but SDS mandatory | High tariff due to Section 301 & 122. |
| 🇨🇳 China | 3810.10.00.00 |
5% | None specific | Low import tariff. |
| 🇪🇺 EU | 3810.10.00 |
0% - 5% | REACH Registration Required | REACH compliance is critical for chemical imports. |
| 🇦🇺 Australia | 3810.10.00 |
5% | None specific | Standard tariff applies. |
| 🇯🇵 Japan | 3810.10.00 |
0% | None specific | Free trade agreement potential. |
📌 Conclusion:
- USA imposes the highest total tariff (40-41.5%) due to Section 301 and Section 122 surcharges.
- EU requires REACH registration, which can be a significant time and cost factor.
- China, Australia, Japan offer much lower tariff burdens.
📌 VI. Common Errors & Pitfall Avoidance (Blood & Tears Lessons)
❌ Error 1: Declaring as "General Chemical Adhesive" to avoid higher HS codes
👉 Consequence: Customs audit → Re-classification to 3810 → Back taxes + Penalties!
❌ Error 2: Missing or inaccurate SDS
👉 Consequence: Cargo held at port → Demurrage & Storage Fees → Delayed delivery.
❌ Error 3: Misstating physical form (e.g., claiming "Solid" when it's "Paste")
👉 Consequence: Inspection delay → Potential seizure if deemed misleading.
❌ Error 4: Ignoring Section 122 Tariff (10%)
👉 Consequence: Underpayment of duties → Audit and fines.
✅ Correct Practice:
"Welding Flux, Powder, Halogen-Free, for Steel Welding, Model XYZ, SDS Provided, HS Code 3810.10.00.00"
🎯 VII. Conclusion: Professional Declaration, Cost Saving, Efficiency!
🎯 Remember the Mantra:
🔹 "Flux is 3810, Adjuvant is 3811, US Tax 40-41.5%, SDS is King!"
🔹 "HS Code determines duty, accuracy saves thousands, mistakes cost days!"
📌 Pro Tip:
If your welding flux is produced in Vietnam, Thailand, or Malaysia, you may qualify for Section 301 Exemptions or lower duties under trade agreements.
Recommend Apply for Advance Ruling before shipment to lock in HS Code and duty rate.
📣 Immediate Action:
📞 Contact Professional Customs Broker + Provide SDS + Apply for HS Code Advance Ruling
🚀 Let your welding flux Clear Customs Smoothly, Ship Efficiently, Maximize Profits!
✨ Professional Clearance Starts with Accurate Classification!
💼 Every Penny of Your Cost Deserves Precise Calculation!
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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。