high strength casting adhesive
CN → US| HS编码 | 关税税率 | 原产国 | 目的国 | 文档 |
|---|---|---|---|---|
| 3506915000 | 37.1% | CN | US | 官方文档 |
| 3506105000 | 37.1% | CN | US | 官方文档 |
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AI分析
🏗️ High Strength Casting Adhesive (Industrial Adhesives)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
📌 I. Product Definition & Classification: What Exactly is "High Strength Casting Adhesive"?
High Strength Casting Adhesives are specialized industrial bonding agents designed to bond metals, composites, or structural materials under high-stress conditions, often mimicking the properties of welding or casting but without the heat. In international trade, these products fall strictly under Chapter 35: Albuminoidal Substances; Modified Starches; Glues; Enzymes.
They are generally classified based on their packaging and base polymer:
1. Retail-Packaged Adhesives (< 1 kg): Products sold in small bottles, tubes, or cartridges for direct consumer or small-scale industrial use, with a net weight not exceeding 1 kg. These are often 2-part epoxy or cyanoacrylate systems.
2. Bulk/Industrial Prepared Adhesives: Products used in manufacturing or construction, not meeting the specific retail criteria, or exceeding 1 kg. These are often based on specific polymers of Chapter 39.
⚠️ Key Classification Point:
- If the adhesive is polymer-based (e.g., Epoxy, Phenolic, Polyurethane from headings 3901-3913) and packaged for retail (≤ 1 kg) → HS 3506.10
- If the adhesive is polymer-based (e.g., Epoxy, Phenolic, Polyurethane from headings 3901-3913) and is NOT retail-packaged or > 1 kg, or is a "preparation" not elsewhere specified → HS 3506.91
- Note: Adhesives based on rubber fall under specific subheadings, but most high-strength casting adhesives are polymer/epoxy-based.
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
Based on the provided <DATA>, here are the two relevant HS codes for High Strength Casting Adhesives:
| HS Code | Product Description | Packaging Condition | Base Material | Net Weight Limit |
|---|---|---|---|---|
3506.10.50.00 |
Products suitable for use as glues or adhesives, put up for retail sale | Retail Packaged (Small bottles, tubes, cartridges) | Any suitable adhesive (non-specified elsewhere) | ≤ 1 kg |
3506.91.50.00 |
Other adhesives based on polymers of headings 3901 to 3913 or on rubber | Industrial/Bulk/Non-Retail or Preparation | Polymers (Epoxies, Phenolics, Polyesters, etc.) | No Limit (but not retail ≤1kg specific subcategory) |
🔍 Critical Distinction:
-3506.10.50.00is for "Retail Sale" items. If you sell a 500g tube of high-strength epoxy to a DIY customer, this is the code.
-3506.91.50.00is for "Prepared Glues... Not Elsewhere Specified" based on polymers. This is typically used for larger containers (e.g., 5kg buckets, industrial cartridges) or complex chemical preparations where the base is a polymer from Chapter 39 (e.g., Epoxy Resins).
- Do not use generic "Glue" codes (3506.99) if the adhesive is explicitly polymer-based (3901-3913), as 3506.91 is more specific.
💰 III. 2026 Latest Tariff Rate Details (Including Surcharges & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Date: 2025/2026 Import Period
🎯 1. 3506.10.50.00 —— Retail Packaged Adhesives (≤ 1 kg)
| Item | Content |
|---|---|
| Base Tariff Rate | 0.0% (Ad Valorem) |
| Section 301 Additional Duty | 0.0% |
| IEEPA Additional Duty | 0.0% |
| Total Tariff Rate | 0.0% |
| Tax Calculation | CIF Value × 0.0% = $0 |
| De Minimis Eligibility | ✅ Yes (If value ≤ $800, no duty owed regardless of rate) |
| Legal Basis Path | HTSUS 3506.10 → USITC Data → No Footnote 301 Application for this specific sub-subheading |
📌 Explanation:
- This category is currently exempt from the major 7.5% or 25% Section 301 tariffs that affect many other chemical products.
- The "0.0%" total tax makes this a highly competitive classification for small-batch or e-commerce retail sales.
- Verification Note: Ensure the product is truly "put up for retail sale." If it is in bulk drums, this code may be rejected by Customs.
🎯 2. 3506.91.50.00 —— Polymer-Based Adhesives (Industrial/Prepared)
| Item | Content |
|---|---|
| Base Tariff Rate | 0.0% (Ad Valorem) |
| Section 301 Additional Duty | 0.0% |
| IEEPA Additional Duty | 0.0% |
| Total Tariff Rate | 0.0% |
| Tax Calculation | CIF Value × 0.0% = $0 |
| De Minimis Eligibility | ✅ Yes (If value ≤ $800) |
| Legal Basis Path | HTSUS 3506.91 → USITC Data → No Footnote 301 Application |
📌 Explanation:
- Despite being "High Strength" and potentially used in critical structural applications, if the base is a polymer (like Epoxy, which is often listed in Chapter 39) and falls under "Other prepared adhesives," it is also classified at 0.0%.
- This is a significant advantage for industrial suppliers. Many users fear high tariffs on chemicals, but this specific adhesive subclass is duty-free.
- Caution: If the adhesive is based on rubber (not polymers 3901-3913), it might fall under a different subheading (e.g., 3506.91.00.00 or 3506.99), but the provided data indicates 3506.91.50.00 covers polymer-based adhesives with 0% tax.
🛠️ IV. Customs Clearance Practical Advice (Real-World Pitfall Guide)
✅ 1. Required Documentation Checklist (Non-Negotiable)
| Document | Must Provide | Description |
|---|---|---|
| ✅ Safety Data Sheet (SDS) | ✔️ | Critical for adhesives. Must be GHS compliant. Shows if hazardous. |
| ✅ Product Formula/Composition | ✔️ | Must specify % of polymers (Headings 3901-3913) vs. other components. |
| ✅ Commercial Invoice | ✔️ | Clearly state "High Strength Casting Adhesive" AND "Not for Retail Sale" OR "Put up for Retail Sale". |
| ✅ Proof of Retail Packaging | ✔️ | If using 3506.10.50.00, provide photos of small retail boxes/tubes. |
| ✅ Bulk/Industrial Proof | ✔️ | If using 3506.91.50.00, provide photos of drums, totes, or large cartridges. |
| ✅ MSDS/HAZMAT Declaration | ✔️ | Required for air/sea freight. Adhesives may be flammable or corrosive. |
✅ 2. Declaration Strategy (Key Mnemonics)
🔥 "Packaging Dictates Code, Polymer Dictates Subcode!"
| Scenario | Correct HS Code | Wrong Practice | Consequence |
|---|---|---|---|
| 500g Tube sold to end-user | 3506.10.50.00 |
Declaring as Bulk | Code mismatch → Delay |
| 5kg Bucket sold to factory | 3506.91.50.00 |
Declaring as Retail | Code mismatch → Delay |
| Adhesive based on Rubber | Check 3506.91.00.00 or 3506.99 |
Using 3506.91.50.00 |
Tax Error (May still be 0%, but description wrong) |
| Non-Polymer Glue (e.g., Animal Glue) | Different Chapter (35.02/35.03) | Using 3506.91.50.00 |
Rejection |
📌 Note on "High Strength":
- The term "High Strength" is a marketing term, not a customs classification term. Do not rely on this word for classification. Focus on Chemical Composition (Polymer? Rubber? Protein?) and Packaging (Retail ≤1kg?).
✅ 3. Special Handling Cases
| Case | Handling Advice |
|---|---|
| Epoxy Resin (Part A + Part B) | Declare as one unit if sold together. If shipped separately, each part may need separate classification if they are reactive. Usually, the final adhesive mixture is declared. |
| Flammable Adhesives | Even if tax is 0%, Hazmat fees apply. Ensure UN Number and Packing Group are on the bill of lading. |
| Sample Shipments | If value < $800, use De Minimis (Section 321). No duty, but SDS is still required. |
| OEM Private Label | Provide authorization letter. Do not use another brand's trademark unless authorized. |
🌍 V. Global Market Customs Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff | Certification Requirement | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 3506.10.50.00 or 3506.91.50.00 |
0.0% | None (except SDS for Hazmat) | Duty-Free! Major advantage. |
| 🇨🇳 China | 3506.91 or 3506.10 |
6% - 7% | N/A | Import duty applies. |
| 🇪🇺 EU | 3506.91 or 3506.10 |
0% - 4% | REACH Registration | Must comply with EU chemical laws. |
| 🇬🇧 UK | 3506.91 or 3506.10 |
0% - 4% | UK REACH | Post-Brexit regulations apply. |
| 🇯🇵 Japan | 3506.91 or 3506.10 |
0% - 3% | None | Generally low tariffs. |
📌 Conclusion:
- USA is the most favorable market for these adhesives due to the 0.0% total tariff for both retail and industrial polymer-based adhesives listed.
- Ensure SDS is perfect to avoid Hazmat delays, as the duty risk is zero.
📌 VI. Common Errors & Pitfall Guide (Blood-Lesson Advice)
❌ Error 1: Classifying bulk industrial epoxy as "Retail" (3506.10)
👉 Consequence: Customs may reject the code because a 20kg drum is not "retail packed."
👉 Solution: Use 3506.91.50.00 for bulk.
❌ Error 2: Missing "Polymer Base" Declaration
👉 Consequence: If Customs determines the adhesive is NOT polymer-based (e.g., it's a starch-based glue), they may reclassify it.
👉 Solution: Provide chemical analysis showing resin content (e.g., "Epoxy Resin, 60%").
❌ Error 3: Ignoring Hazmat Classification
👉 Consequence: Even with 0% duty, the shipment will be held by the carrier or Customs if not flagged as Flammable/Corrosive.
👉 Solution: Clearly mark "Class 3 Flammable Liquid" (if applicable) on the shipping docs.
✅ Correct Declaration Example:
"High Strength Two-Part Epoxy Adhesive, Put up for Retail Sale, 0.5kg Tube, Contains Epoxy Resin (HS 3506.10.50.00), SDS Attached."
🎯 VII. Conclusion: Professional Declaration, Zero Duty, Fast Clearance!
🎯 Remember the Mnemonic:
🔹 "Retail Tube is 10, Bulk Drum is 91, Both Are Zero, Check the Chemicals!"
🔹 "Packaging Size Matters, Polymer Base Wins, Zero Tax for USA, Hazmat Docs Begin!"
📌 Pro Tip:
If your adhesive is based on Rubber (not polymers 3901-3913), check if it still falls under 3506.91.50.00 or if it requires a different subheading. The provided data specifies "Polymers of 3901-3913 OR Rubber" under 3506.91.50.00, so Rubber-based adhesives are also likely 0.0%. Always confirm the base material.
📣 Immediate Action:
📞 Contact your customs broker with the SDS and Packaging Photos.
🚀 Apply for Advance Ruling if shipping large volumes to lock in the 0.0% rate.
✅ Clear Customs Efficiently, Save 100% of Tariff Costs!
✨ Professional Clearance Starts with Precise Classification!
💼 Your Adhesive is Duty-Free—Don't Let Documentation Errors Cost You Time!
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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。