Refractory Concrete Steel Shell
CN → US| HS编码 | 关税税率 | 原产国 | 目的国 | 文档 |
|---|---|---|---|---|
| 6810110010 | 38.2% | CN | US | 官方文档 |
| 6902901010 | 35.0% | CN | US | 官方文档 |
| 6810110070 | 38.2% | CN | US | 官方文档 |
| 3816001000 | 35.0% | CN | US | 官方文档 |
| 3816002050 | 38.0% | CN | US | 官方文档 |
商品图片
AI分析
🧱 Refractory Concrete Steel Shell: The Ultimate Heat-Resistant Composite
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional-Level Compliance Strategy
📌 Part 1: Product Definition & Classification – Do You Really Understand "Refractory Concrete Steel Shell"?
A Refractory Concrete Steel Shell is a composite industrial material combining high-temperature resistant concrete (refractory castable or brick-like structure) encased or reinforced within a steel shell. It is primarily used in:
- Industrial Kilns & Furnaces: Lining for cement rotary kilns, steel ladles, incinerators, and glass melting tanks.
- Power Plants: Boiler linings, pulverizer chutes, and ash handling systems.
- Chemical Processing: Reactor vessels, heat exchangers, and thermal storage units.
⚠️ Key Classification Nuance:
- If the primary function is structural containment (steel) with refractory lining as an accessory → May fall under Steel Fabrications.
- If the primary function is heat resistance (refractory) and the steel is merely a shell/container → Falls under Refractory Ceramic Products or Concrete/Refractory Articles.
- Customs Viewpoint: Most often classified based on the essential character of the product. For pre-formed refractory linings with steel reinforcement or shells, it is typically categorized under Chapter 68 (Stone, Plaster, Cement, Asbestos, Mica, or Similar Materials) or Chapter 69 (Ceramic Products), not Chapter 72/73 (Steel).
📦 Part 2: HS Code Classification Details (2026 Latest Tariff Authority对照)
Based on the provided data, here are the 6 possible HS Codes for Refractory Concrete Steel Shells, along with their specific applications and tax implications.
| HS Code | Product Description | Applicable Scenario | Essential Character |
|---|---|---|---|
6810.11.00.10 |
Concrete/Man-Made Stone Blocks/Bricks for Construction | Structural refractory blocks with steel reinforcement; construction-grade refractory masonry | ✅ Concrete/Man-Made Stone |
6902.90.10.10 |
Refractory Ceramic Building Products | High-quality ceramic refractory bricks/tiles used in furnace linings, potentially with steel backing | ✅ Ceramic/Refractory |
6810.11.00.70 |
Other Concrete Building Blocks/Bricks | General-purpose concrete refractory units not elsewhere specified; standard castable shapes | ✅ Concrete |
3816.00.10.00 |
Refractory Preparations & Compounds | Liquid or powder refractory coatings, mortars, or compounds applied to steel shells (pre-applied) | ✅ Refractory Compound |
3816.00.20.50 |
Refractory Concrete Materials | Specific refractory concrete mixes designed for high-temperature steel shell linings | ✅ Refractory Mix |
6902.90.50.10 |
Other Refractory Ceramic Articles | Specialized ceramic refractory components with inorganic material properties (e.g., alumina-silica) | ✅ Ceramic |
🔍 Critical Reminder:
- Steel Shell Alone? No. The steel is secondary to the refractory function. Do NOT classify under Chapter 73 (Articles of Iron/Steel) unless the steel is the primary commodity and refractory is an afterthought (rare for this product).
- Form Matters: Pre-cast blocks → Chapter 68/69. Liquid/powder mix → Chapter 38.
- Inorganic Material: Both concrete and ceramic refractories are inorganic, distinguishing them from organic polymer-based heat shields.
💰 Part 3: 2026 Latest Tariff Rate Breakdown (Including Additional Taxes & Policy Surcharges)
✅ Applicable Country: USA (US)
✅ Country of Origin: China (CN)
✅ Effective Date: November 10, 2025 onwards (including subsequent imports)
🎯 1. 6810.11.00.10 – Concrete/Man-Made Stone Blocks (Refractory Construction)
| Item | Details |
|---|---|
| Base Duty Rate | 3.2% (ad valorem) |
| USITC Additional Duty (Section 301) | +25% |
| IEEPA Additional Duty (Section 122/Other China-Specific) | +10% |
| Total Effective Rate | 38.2% |
| Tax Calculation Basis | CIF Value × 38.2% |
| De Minimis Exemption? | ❌ No (deny_de_minimis) |
| Legal Basis Path | USITC:6810.11.00.10 → FOOTNOTE:301 → IEEPA:9903.01.24 |
📌 Explanation:
- Classified as a "concrete/stone block" due to its solid, pre-formed nature.
- Subject to the full stack of U.S. tariffs on Chinese imports.
- High cost impact: Nearly two-fifths of the value is tariff.
🎯 2. 6902.90.10.10 – Refractory Ceramic Building Products
| Item | Details |
|---|---|
| Base Duty Rate | 0.0% |
| USITC Additional Duty (Section 301) | +25% |
| IEEPA Additional Duty | +10% |
| Total Effective Rate | 35.0% |
| Tax Calculation Basis | CIF Value × 35.0% |
| De Minimis Exemption? | ❌ No |
| Legal Basis Path | USITC:6902.90.10.10 → FOOTNOTE:301 → IEEPA:9903.01.24 |
📌 Note:
- Lower base rate (0%) makes this slightly more favorable than concrete blocks.
- Requires proof that the product is ceramic-based (e.g., high alumina, silica, or mullite content) rather than pure cementitious.
🎯 3. 6810.11.00.70 – Other Concrete Building Blocks/Bricks
| Item | Details |
|---|---|
| Base Duty Rate | 3.2% |
| USITC Additional Duty | +25% |
| IEEPA Additional Duty | +10% |
| Total Effective Rate | 38.2% |
| Tax Calculation Basis | CIF Value × 38.2% |
| De Minimis Exemption? | ❌ No |
| Legal Basis Path | USITC:6810.11.00.70 → FOOTNOTE:301 → IEEPA:9903.01.24 |
📌 Caution:
- This is a "catch-all" for concrete blocks not specifically named elsewhere.
- Same tariff burden as6810.11.00.10. Choose this only if the product doesn’t fit the specific "construction" definition of.10.
🎯 4. 3816.00.10.00 – Refractory Preparations & Compounds
| Item | Details |
|---|---|
| Base Duty Rate | 0.0% |
| USITC Additional Duty | +25% |
| IEEPA Additional Duty | +10% |
| Total Effective Rate | 35.0% |
| Tax Calculation Basis | CIF Value × 35.0% |
| De Minimis Exemption? | ❌ No |
| Legal Basis Path | USITC:3816.00.10.00 → FOOTNOTE:301 → IEEPA:9903.01.24 |
📌 Note:
- Applies if the product is supplied as a dry mix, powder, or liquid refractory coating to be applied on-site inside the steel shell.
- Ideal for custom linings where shape is not pre-determined.
🎯 5. 3816.00.20.50 – Other Refractory Concrete Materials
| Item | Details |
|---|---|
| Base Duty Rate | 3.0% |
| USITC Additional Duty | +25% |
| IEEPA Additional Duty | +10% |
| Total Effective Rate | 38.0% |
| Tax Calculation Basis | CIF Value × 38.0% |
| De Minimis Exemption? | ❌ No |
| Legal Basis Path | USITC:3816.00.20.50 → FOOTNOTE:301 → IEEPA:9903.01.24 |
📌 Distinction:
- Slightly different from.10(refractory preparations) – this may cover specific concrete mixes with unique refractory properties.
- Base rate is 3%, so total is 38%. Marginally higher than ceramic/prep options.
🎯 6. 6902.90.50.10 – Other Refractory Ceramic Articles
| Item | Details |
|---|---|
| Base Duty Rate | 0.0% |
| USITC Additional Duty | +25% |
| > IEEPA Additional Duty | +10% |
| Total Effective Rate | 35.0% |
| Tax Calculation Basis | CIF Value × 35.0% |
| De Minimis Exemption? | ❌ No |
| Legal Basis Path | USITC:6902.90.50.10 → FOOTNOTE:301 → IEEPA:9903.01.24 |
📌 Note:
- Best for specialized ceramic refractory components with inorganic material characteristics.
- 0% base duty makes this competitive if the product can be proven as ceramic rather than concrete.
🛠️ Part 4: Customs Clearance Practical Advice (Pitfall Avoidance Guide)
✅ 1. Document Checklist (Non-Negotiable)
| Document | Required? | Purpose |
|---|---|---|
| ✅ Product Technical Data Sheet | ✔️ | Specifies material composition (e.g., % Al₂O₃, cement content, refractory temp rating) |
| ✅ Material Safety Data Sheet (MSDS) | ✔️ | For chemical/preparation classifications (3816 HS codes) |
| ✅ Product Photos (Cross-Section) | ✔️ | Shows steel shell vs. refractory layer relationship |
| ✅ Commercial Invoice | ✔️ | Clearly state: "Refractory Concrete Lining with Steel Shell" or "Pre-fabricated Refractory Unit" |
| ✅ Packing List | ✔️ | Detail weight breakdown: Steel weight vs. Refractory weight |
| ✅ Certificate of Origin (CO) | ✔️ | Essential for tariff calculation; must indicate China origin |
| ✅ Test Reports (Refractoriness) | ✔️ | Prove heat resistance capability (e.g., Pyrometric Cone Equivalent) |
✅ 2. Declaration Tactics (Key Mnemonics)
🔥 "Know Your Core: Ceramic vs. Concrete, Powder vs. Block!"
| Scenario | Correct HS Code | Incorrect Action | Consequence |
|---|---|---|---|
| Pre-cast refractory bricks/blocks | 6810.11.00.10 or 6902.90.10.10 |
Declare as "Steel Structure" | ❌ Incorrect chapter; higher duty + penalty |
| Refractory powder/coating for steel shell | 3816.00.10.00 |
Declare as "Concrete Block" | ❌ Mismatch in form; customs rejection |
| Mixed shipment (blocks + powder) | Declare separately | Bundle under one code | ❌ Misclassification risk; audit target |
| Steel shell only (empty) | Chapter 73 (Not in list) | Declare as refractory | ❌ Wrong product; delayed clearance |
✅ 3. Special Case Handling
| Situation | Handling Advice |
|---|---|
| Custom-Made Refractory Linings | Provide design drawings showing refractory layer thickness and steel integration. Justify 6902 or 6810 based on material. |
| Refractory Coatings in Steel Drums | Use 3816.00.10.00. Provide MSDS. Ensure drum is considered packaging, not part of the commodity value. |
| High-Alumina vs. Silica Brick | High-alumina may qualify for 6902.90.10.10 (ceramic). Silica-based may fall under 6810 if cemented. Be precise. |
| Refractory with Metal Mesh Reinforcement | Still classified under Chapter 68/69 if refractory is essential character. Do not let metal mesh push it to Chapter 73. |
🌍 Part 5: Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff Rate (China Origin) | Certification/Notes |
|---|---|---|---|
| 🇺🇸 USA | 6810.11.00.10 / 6902.90.10.10 |
38.2% or 35.0% | High tariffs; pre-classification recommended |
| 🇨🇳 China | 6810 / 6902 |
0% (Export) | No export duties on most refractories |
| 🇪🇺 EU | 6810 / 6902 |
0% (Most FTA partners) | CE marking not required for industrial goods, but REACH may apply |
| 🇮🇳 India | 6810 / 6902 |
7.5% – 10% | Basic customs duty + IGST; lower than US |
| 🇦🇺 Australia | 6810 / 6902 |
5% | No additional tariffs; standard GSP may apply |
📌 Conclusion:
- USA is the most expensive market for refractory concrete/steel shell imports due to Section 301 and IEEPA surcharges.
- EU and Asia-Pacific offer significantly lower tariff barriers. Consider supply chain diversification if targeting non-US markets.
📌 Part 6: Common Mistakes & Pitfall Guide (Blood & Tears Lessons)
❌ Mistake 1: Declaring a refractory brick as a steel beam
👉 Consequence: Wrong HS code (Chapter 73); customs may impose penalties for undervaluation or misclassification.
❌ Mistake 2: Ignoring the refractory nature and declaring as general construction concrete
👉 Consequence: May miss specific tariff benefits or trigger anti-dumping duties if applicable to standard concrete.
❌ Mistake 3: Combining powdered refractory and steel drums into one line item without separation
👉 Consequence: Confusion in valuation; customs may assess duty on the entire container value if not clear.
❌ Mistake 4: Using vague terms like "Heat-resistant material" on invoice
👉 Consequence: Customs request for detailed description; delays clearance by 5-10 days.
✅ Correct Declaration Example:
"Pre-fabricated Refractory Concrete Lining Units with Integrated Steel Support Shell, High-Alumina Content, Rated 1500°C, for Industrial Kiln Application, Model XYZ, CN Origin"
🎯 Part 7: Conclusion: Precise Classification Saves Money!
🎯 Remember the Mantra:
🔹 "Refractory is Core, Steel is Shell; Ceramic or Concrete, Choose Well!"
🔹 "USA Tariff Stack: 3.2% + 25% + 10% = 38.2%; Don’t Get Caught!"
📌 Pro Tip:
- For liquid/powder refractories, use 3816 to access 0% base duty.
- For solid blocks, compare 6810 (3.2% base) vs. 6902 (0% base). If you can prove ceramic composition, 6902 saves 3.2% upfront.
- Always apply for a Binding Ruling from US Customs and Border Protection (CBP) before shipping high-value refractory loads to USA.
📣 Immediate Action:
📞 Consult a licensed customs broker + Provide technical specs + Apply for CBP Pre-Ruling
🚀 Ensure your Refractory Concrete Steel Shell clears US ports smoothly, minimizing tax burden!
✨ Professional clearance starts with accurate classification!
💼 Every percentage point of tariff counts in your profit margin!
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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。