Fire Resistant Mortar High Viscosity
CN → US| HS编码 | 关税税率 | 原产国 | 目的国 | 文档 |
|---|---|---|---|---|
| 2530908050 | 10.0% | CN | US | 官方文档 |
| 6902201020 | 35.0% | CN | US | 官方文档 |
| 2530908015 | 10.0% | CN | US | 官方文档 |
| 3816002010 | 38.0% | CN | US | 官方文档 |
| 2522200000 | 35.0% | CN | US | 官方文档 |
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AI分析
🏗️ High-Viscosity Fire-Resistant Mortar: HS Code Classification & US Customs Clearance Guide
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
📌 I. Product Definition: What is High-Viscosity Fire-Resistant Mortar?
High-Viscosity Fire-Resistant Mortar is a specialized building material composed of high-alumina cement, refractory aggregates, and chemical additives. Its key characteristic is high viscosity, which ensures strong adhesion and prevents slumping during application on vertical or overhead surfaces. It is primarily used for: - Laying refractory bricks in high-temperature kilns, furnaces, and incinerators. - Repairing and patching refractory linings. - Jointing and sealing high-temperature industrial equipment.
⚠️ Key Classification Challenge:
Customs authorities often debate whether this product is a "mineral substance" (unprocessed or minimally processed) or a "refractory ceramic product" / "chemical mixture". The classification determines the tariff rate, which varies significantly from 10% to 38%.
📦 II. HS Code Classification Details (Based on Provided Data)
| HS Code | Product Description | Summary & Rationale | Total Tax Rate | Tax Breakdown |
|---|---|---|---|---|
2530.90.80.50 |
Mineral Substances, Not Elsewhere Specified | Considered a mineral substance. Classified under "other mineral substances" not specifically named elsewhere. High-alumina content is viewed as a natural/mineral origin. | 10.0% | Base: 0.0% Section 301 (25%): 0.0% Section 122 (10%): 10% |
6902.20.10.20 |
Refractory Bricks & Similar Refractory Ceramics | Classified as a refractory ceramic product due to high-alumina composition and intended use in high-temperature applications. Fits the scope of refractory materials. | 35.0% | Base: 0.0% Section 301 (25%): 25% Section 122 (10%): 10% |
2530.90.80.15 |
Other Mineral Substances (Aluminum Oxide Based) | Viewed as containing aluminum oxide compounds derived from mineral sources. Falls under "other mineral substances" with specific aluminum oxide characteristics. | 10.0% | Base: 0.0% Section 301 (25%): 0.0% Section 122 (10%): 10% |
3816.00.20.10 |
Prepared Binders for Foundry Molds; Refractory Cements | Classified based on its name and form as a "mortar" (a prepared binder/cement). Recognized as a chemical mixture or prepared refractory cement. | 38.0% | Base: 3.0% Section 301 (25%): 25% Section 122 (10%): 10% |
2522.20.00.00 |
Calcined Limestone & Dolomite (Including Hydraulic Limes) | Classified due to the presence of lime components. Matches the chemical properties and usage of hydraulic/limestone-based binders. | 35.0% | Base: 0.0% Section 301 (25%): 25% Section 122 (10%): 10% |
🔍 Critical Insight:
- The lowest tax rate (10%) applies if the product is classified as a mineral substance (2530.90.80.50or2530.90.80.15).
- The highest tax rate (38%) applies if classified as a prepared cement/binder (3816.00.20.10).
- Section 301 Tariff (25%) applies only to6902.20.10.20and2522.20.00.00, NOT to2530.90.80.50/.15or3816.00.20.10(wait, check data:3816has 0% Section 301? Data says "加征关税: 25.0%" for3816? Let's re-read data carefully).📊 Re-checking Data for
3816.00.20.10:
Data:"tax_detail":"基础关税: 3.0%, 加征关税: 25.0%,122条款关税10%"
Wait, the summary says38.0%total. Base 3% + 25% + 10% = 38%. Yes, Section 301 (25%) APPLIES to3816?
Let's re-read thetax_detailfor3816.00.20.10:"基础关税: 3.0%, 加征关税: 25.0%,122条款关税10%"
Correction: Yes,3816DOES have 25% Section 301 tariff according to the provided data. My initial quick glance was wrong.Re-checking Data for
2530.90.80.50:"tax_detail":"基础关税: 0.0%, 加征关税: 0.0%,122条款关税10%"→ No Section 301.
Re-checking Data for6902.20.10.20:"tax_detail":"基础关税: 0.0%, 加征关税: 25.0%,122条款关税10%"→ Has Section 301.
Re-checking Data for2530.90.80.15:"tax_detail":"基础关税: 0.0%, 加征关税: 0.0%,122条款关税10%"→ No Section 301.
Re-checking Data for2522.20.00.00:"tax_detail":"基础关税: 0.0%, 加征关税: 25.0%,122条款关税10%"→ Has Section 301.✅ Tax Rate Summary Table:
| HS Code | Base | Section 301 | Section 122 | Total |
|---|---|---|---|---|
2530.90.80.50 |
0% | 0% | 10% | 10% |
2530.90.80.15 |
0% | 0% | 10% | 10% |
6902.20.10.20 |
0% | 25% | 10% | 35% |
2522.20.00.00 |
0% | 25% | 10% | 35% |
3816.00.20.10 |
3% | 25% | 10% | 38% |
💰 III. 2026 Latest Tariff Rate Details (Including Surcharges)
✅ Applicable Country: USA
✅ Origin: China
✅ Effective Time: 2025/2026 (Current)
🎯 1. 2530.90.80.50 & 2530.90.80.15 —— Mineral Substances (Lowest Tax!)
| Item | Content |
|---|---|
| Base Rate | 0% (ad valorem) |
| Section 301 Surcharge | 0% (Exempt) |
| Section 122 Surcharge | 10% |
| Total Rate | 10% |
| Tax Calculation | CIF Value × 10% |
| De Minimis Eligibility | ❌ No (Deny de minimis) |
| Legal Basis | HTS: 2530.90.80 → FOOTNOTE: 122 |
📌 Explanation:
- These HS Codes classify the product as a mineral substance rather than a ceramic or chemical mixture.
- Section 301 (25%) does NOT apply, making this the most cost-effective classification.
- Section 122 (10%) applies to all Chinese-origin goods under this category.
🎯 2. 6902.20.10.20 —— Refractory Ceramics
| Item | Content |
|---|---|
| Base Rate | 0% |
| Section 301 Surcharge | +25% |
| Section 122 Surcharge | +10% |
| Total Rate | 35% |
| Tax Calculation | CIF Value × 35% |
| De Minimis Eligibility | ❌ No |
| Legal Basis | HTS: 6902.20 → FOOTNOTE: 301 & 122 |
📌 Explanation:
- Classified as refractory ceramic bricks/materials.
- Section 301 (25%) APPLIES due to the ceramic nature.
- High tax burden; avoid unless specifically required by end-use.
🎯 3. 2522.20.00.00 —— Calcined Limestone/Hydraulic Limes
| Item | Content |
|---|---|
| Base Rate | 0% |
| Section 301 Surcharge | +25% |
| Section 122 Surcharge | +10% |
| Total Rate | 35% |
| Tax Calculation | CIF Value × 35% |
| De Minimis Eligibility | ❌ No |
| Legal Basis | HTS: 2522.20 → FOOTNOTE: 301 & 122 |
📌 Explanation:
- Only applicable if the mortar is predominantly lime-based.
- Section 301 (25%) APPLIES.
🎯 4. 3816.00.20.10 —— Prepared Refractory Cements/Mortars
| Item | Content |
|---|---|
| Base Rate | 3% |
| Section 301 Surcharge | +25% |
| Section 122 Surcharge | +10% |
| Total Rate | 38% |
| Tax Calculation | CIF Value × 38% |
| De Minimis Eligibility | ❌ No |
| Legal Basis | HTS: 3816.00 → FOOTNOTE: 301 & 122 |
📌 Explanation:
- Classified as a prepared chemical mixture/binder.
- Highest tax rate (38%).
- Only use if the product does not fit mineral or ceramic categories.
🛠️ IV. Customs Clearance Practical Advice (Avoid Pitfalls)
✅ 1. Document Checklist (Mandatory)
| Document | Required | Description |
|---|---|---|
| ✅ Product Spec Sheet | ✔️ | Must detail chemical composition (e.g., % Al₂O₃, % CaO, % SiO₂). |
| ✅ Technical Data Sheet (TDS) | ✔️ | Include viscosity, setting time, compressive strength, and temperature resistance. |
| ✅ Product Photos | ✔️ | Show packaging, label, and product texture (powder/paste). |
| ✅ Composition Declaration | ✔️ | Explicitly state the raw material sources (natural mineral vs. synthetic). |
| ✅ Commercial Invoice | ✔️ | Clear description: "High-Alumina Fire-Resistant Mortar, Mineral Base, High Viscosity." |
| ✅ Certificate of Origin (CO) | ✔️ | To verify China origin and apply correct Section 122 tariff. |
| ✅ MSDS | ✔️ | Safety Data Sheet for customs and safety compliance. |
✅ 2. Declaration Strategy (Key Tips)
🔥 “Mineral Base, Low Tax! Ceramic Base, High Tax!”
| Scenario | Correct HS Code | Risk |
|---|---|---|
| Product is primarily natural mineral (high-alumina clay, bauxite) | 2530.90.80.50 or 2530.90.80.15 |
✅ Low Risk, Low Tax (10%) |
| Product is fired/sintered refractory brick substitute | 6902.20.10.20 |
❌ High Tax (35%), Risk of Audit |
| Product is a lime-based binder | 2522.20.00.00 |
❌ High Tax (35%) |
| Product is a chemical mixture with additives | 3816.00.20.10 |
❌ Highest Tax (38%) |
📌 Critical Advice:
- Emphasize "Mineral Origin" in your declaration.
- Provide lab tests proving the raw materials are natural minerals (not synthetic ceramics).
- Avoid using terms like "Ceramic," "Sintered," or "Refractory Brick" if you want to avoid6902.
- Use terms like "Mineral Binding Agent," "Alumina Mineral Mortar," or "Natural Refractory Mineral."
✅ 3. Special Cases
| Situation | Handling Advice |
|---|---|
| OEM Custom Mortar | Provide formula and raw material invoices to prove mineral origin. |
| Mixed Packaging | Declare as single unit; do not split mortar + additives if used together. |
| Industrial vs. Construction | If for industrial furnaces, still classify by composition, not end-use. |
| High Viscosity | Mention in TDS to prove it's a "mortar" and not a simple powder, but composition dictates HS Code. |
🌍 V. Global Market Comparison (2026)
| Market | Recommended HS Code | Tariff | Certification | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 2530.90.80.50 |
10% | None | Avoid 6902 (35%) and 3816 (38%). |
| 🇨🇳 China | 2530.90.80.50 |
5-8% | GB Standard | Lower base tax, no Section 122. |
| 🇪🇺 EU | 2530.90.90 |
0-5% | REACH | Generally low tariff for minerals. |
| 🇦🇺 Australia | 2530.90.90 |
5% | None | Similar to US mineral classification. |
| 🇯🇵 Japan | 2530.90.90 |
0% | JIS | No additional surcharges. |
📌 Conclusion:
- USA is the most challenging market due to Section 122 (10%) on minerals and Section 301 (25%) on ceramics/chemicals.
- Optimizing for2530.90.80.50saves 25-28% in tariffs compared to other classifications.
📌 VI. Common Mistakes & Pitfalls (Lessons Learned)
❌ Mistake 1: Declaring as "Refractory Brick" (6902)
👉 Result: 35% tariff instead of 10%. Loss of profit!
❌ Mistake 2: Using "Chemical Mortar" (3816)
👉 Result: 38% tariff + 3% base tax. Most expensive option.
❌ Mistake 3: Not providing chemical composition
👉 Result: Customs may misclassify to highest tariff category. Audit risk.
❌ Mistake 4: Ignoring Section 122
👉 Result: Even mineral products pay 10%. Don't assume 0% tariff.
✅ Correct Approach:
"High-Alumina Mineral Mortar, Natural Origin, High Viscosity, for Kiln Lining"
HS Code:2530.90.80.50
🎯 VII. Conclusion: Smart Classification, Maximize Profit!
🎯 Remember the Golden Rule:
🔹 "Mineral = 10% | Ceramic = 35% | Chemical = 38%"
🔹 "Prove Mineral Origin, Avoid Section 301, Save 25% Tax!"
📌 Pro Tip:
If your mortar contains synthetic materials or is fired/sintered, you cannot use 2530.90.80.50. You must use 6902 or 3816.
👉 Consult a customs broker to review your raw material invoices and lab reports before shipment.
📣 Action Required:
📞 Contact a Customs Broker
📄 Prepare Lab Reports Proving Mineral Origin
🚀 Declare Correctly: "Mineral Mortar" → 10% Tax
✨ Professional Clearance, Starting with Accurate Classification!
💼 Every Dollar Saved in Tariffs is Pure Profit!
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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。