Fireproof Repair Material (Low Alkali)
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3824500050 | 35.0% | CN | US | Official Doc |
| 3214100090 | 38.7% | CN | US | Official Doc |
| 3214100010 | 38.7% | CN | US | Official Doc |
| 3824994900 | 41.5% | CN | US | Official Doc |
| 3824500050 | 35.0% | CN | US | Official Doc |
Product Images
AI Analysis
π‘οΈ Fireproof Repair Material (Low Alkali)
π HS Code Reference & Customs Clearance Guide | 2024-2026 Tariff Analysis | Professional Compliance Strategy
π I. Product Definition & Classification: What Exactly is "Fireproof Repair Material"?
"Fireproof Repair Material (Low Alkali)" refers to specialized chemical compounds used for restoring, sealing, or reinforcing structures exposed to high temperatures. These materials are typically cementitious, epoxy-based, or silicate mixtures designed to withstand fire stress while minimizing alkali content to prevent corrosion or chemical degradation in sensitive environments (e.g., industrial chimneys, steel structures, or concrete repairs).
In international trade, this product falls under Chapter 38 (Miscellaneous Chemical Products) or Chapter 32 (Tanning/Dyeing Extracts, Pigments, etc.), depending on its primary function (structural fireproofing vs. sealing/filling).
β οΈ Key Distinction:
- If the material is primarily a non-refractory mortar/concrete for structural fire protection β HS 3824
- If the material acts as a sealant, filler, or putty with fire-retardant properties β HS 3214
- If it is a general chemical mixture with unspecified fireproof properties β HS 3824.99
π¦ II. HS Code Classification Details (Latest Tariff Schedule)
| HS Code | Product Description | Application Scenario | Primary Function |
|---|---|---|---|
3824.50.00.50 |
Fireproof repair materials; chemical preparations; non-refractory mortars/concretes | Structural fireproofing, concrete restoration | β Fireproofing |
3214.10.00.90 |
Repair materials with filling/repair properties; fire-resistant sealants or fillers | Joint sealing, crack filling in fire zones | β Sealing/Filling |
3214.10.00.10 |
Fast-drying materials; physical form matches sealants or putties | Quick-fix repairs, surface coating | β Fast-drying Sealant |
3824.99.49.00 |
Fireproof repair materials; chemical preparations; synthetic mixtures | General chemical-based fireproofing agents | β Chemical Mixture |
π Focus Reminder:
- HS 3824 covers "Miscellaneous Chemical Products," including non-refractory mortars and prepared binders. This is the most common classification for structural fireproof repairs. - HS 3214 covers "Prepared Paints, Varnishes, Sealants, and Putties." If the material is used like a caulk or filler, it falls here. - HS 3824.99 is a residual category for chemical mixtures not elsewhere specified, often applied when the specific fireproof composition is complex or proprietary.
π° III. 2026 Latest Tariff Rate Breakdown (Including Surcharges & Policy Add-ons)
β Applicable Country: United States (US)
β Origin: China (CN)
β Effective Date: November 10, 2025 onwards (including subsequent imports)
π― 1. 3824.50.00.50 ββ Fireproof Repair Materials (Non-Refractory Mortars)
| Item | Content |
|---|---|
| Base Duty | 0.0% (ad valorem) |
| USITC Additional Duty | +25.0% (Section 301 Duties) |
| 122 Clause Tariff | +10.0% (Specific USITC footnote for certain chemical preparations) |
| Total Duty Rate | 35.0% |
| Calculation | CIF Value Γ 35% |
| De Minimis Exemption | β Not Eligible (deny_de_minimis) |
| Legal Path | USITC:3824.50.00.50 β FOOTNOTE:122 β SECTION301:25% |
π Explanation:
- This classification is often used for structural fireproofing mortars. - The 0% base duty is offset by a heavy 25% Section 301 surcharge and a 10% specific duty (122 Clause), resulting in a 35% total. - Crucial: Even though the base duty is 0%, the total effective rate is significant. Do not assume "0% duty" means low cost.
π― 2. 3214.10.00.90 ββ Repair Materials (Sealing/Filling Properties)
| Item | Content |
|---|---|
| Base Duty | 3.7% |
| USITC Additional Duty | +25.0% (Section 301 Duties) |
| 122 Clause Tariff | +10.0% |
| Total Duty Rate | 38.7% |
| Calculation | CIF Value Γ 38.7% |
| De Minimis Exemption | β Not Eligible |
| Legal Path | USITC:3214.10.00.90 β FOOTNOTE:122 β SECTION301:25% |
π Note:
- If the material is declared as a sealant or filler (e.g., fireproof caulk), the base duty is higher (3.7%), leading to a 38.7% total. - Common for joint sealants in fire-rated walls or doors.
π― 3. 3214.10.00.10 ββ Fast-Drying Sealants/Putties
| Item | Content |
|---|---|
| Base Duty | 3.7% |
| USITC Additional Duty | +25.0% (Section 301 Duties) |
| 122 Clause Tariff | +10.0% |
| Total Duty Rate | 38.7% |
| Calculation | CIF Value Γ 38.7% |
| De Minimis Exemption | β Not Eligible |
| Legal Path | USITC:3214.10.00.10 β FOOTNOTE:122 β SECTION301:25% |
π Note:
- Similar to the previous code, but specifically for fast-drying formulations. - The 38.7% total applies to quick-set fireproof putties or repair compounds.
π― 4. 3824.99.49.00 ββ Other Chemical Mixtures (Fireproof)
| Item | Content |
|---|---|
| Base Duty | 6.5% |
| USITC Additional Duty | +25.0% (Section 301 Duties) |
| 122 Clause Tariff | +10.0% |
| Total Duty Rate | 41.5% |
| Calculation | CIF Value Γ 41.5% |
| De Minimis Exemption | β Not Eligible |
| Legal Path | USITC:3824.99.49.00 β FOOTNOTE:122 β SECTION301:25% |
π Note:
- This is a residual category for chemical mixtures that don't fit neatly into mortars or sealants. - Highest total duty at 41.5% due to the higher base rate (6.5%). - Use only if the product composition is complex and doesn't align with specific mortar or sealant definitions.
π οΈ IV. Customs Clearance Practical Advice (Combat Pitfalls Guide)
β 1. Required Documentation Checklist (Non-Negotiable)
| Document | Must Provide | Description |
|---|---|---|
| β Product Specification Sheet | βοΈ | Detailed composition, alkali content, fire-resistance rating (e.g., ASTM E119) |
| β Safety Data Sheet (SDS) | βοΈ | Critical for chemical products; must confirm non-hazardous nature under US DOT rules |
| β Product Photos | βοΈ | Clear images of packaging, label, and material texture |
| β Certificate of Analysis (COA) | βοΈ | Proves "Low Alkali" specification matches declaration |
| β Commercial Invoice | βοΈ | Must accurately describe product as "Fireproof Repair Material" or "Non-Refractory Mortar" |
| β Origin Certificate | βοΈ | Required to verify Chinese origin for Section 301 duties |
| β Packaging List | βοΈ | Detail net/gross weight; avoid splitting shipments to evade scrutiny |
β 2. Declaration Tips (Key Mantra)
π₯ βMaterial True, Function Clear, HS Precise, Duty Avoids Surprise!β
| Scenario | Correct Declaration | Error to Avoid |
|---|---|---|
| Structural Fireproof Mortar | 3824.50.00.50 "Fireproof Repair Material" |
Misdeclaring as generic "Chemical Mix" β 3824.99 (Higher Duty) |
| Fireproof Sealant/Caulk | 3214.10.00.90 "Fire-Retardant Sealant" |
Declaring as "Paint" β Different HS, Potential Misclassification |
| Fast-Drying Putty | 3214.10.00.10 "Fast-Drying Fireproof Putty" |
Not specifying "Fast-Drying" β May lead to 3214.10.00.90 (Same Rate, but better accuracy) |
| Complex Chemical Mix | 3824.99.49.00 "Prepared Fireproof Chemical Mixture" |
Vague description "Repair Material" β Customs Rejection or Audit |
β 3. Special Handling Cases
| Case | Handling Advice |
|---|---|
| OEM Custom Formulations | Provide formulation details to Customs Broker; ensure "Low Alkali" is verified |
| Bulk vs. Retail Packaging | Bulk shipments may require additional environmental permits; retail may qualify for different labeling |
| Mixed Shipments | If Fireproof Material is mixed with non-fireproof chemicals, separate declarations are required to avoid misclassification of the entire shipment |
| Third-Party Testing | Provide UL, FM, or ASTM test reports to prove fireproof claims; helps justify HS classification |
π V. Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Duty (China Origin) | Certification Required | Notes |
|---|---|---|---|---|
| πΊπΈ USA | 3824.50.00.50 |
35.0% | SDS, ASTM Reports | High duties due to Section 301 + 122 Clause |
| π¨π³ China | 3824.50.00.50 |
5.0% (Typical) | CCC (if applicable) | No Section 301; Lower cost domestically |
| πͺπΊ EU | 3824.99 |
0%~6.5% (Variable) | REACH, CLP | No additional tariffs; REACH registration mandatory |
| π¬π§ UK | 3824.99 |
0%~6.5% (Variable) | UK REACH | Post-Brexit rules apply; similar to EU |
| π¦πΊ Australia | 3824.99 |
5.0% | ACMA (if electronic components) | Low base duty; No Section 301 |
π Conclusion:
- USA is the most challenging market due to 35-41.5% total duties. - EU/UK/Australia have lower base duties but require strict chemical compliance (REACH/UK REACH). - China Domestic Market offers the lowest duty cost (approx. 5%).
π VI. Common Errors & Pitfall Guide (Lessons Learned)
β Error 1: Declaring as "Construction Cement" (2523)
π Consequence: Misclassification; Customs may reclassify to 3824 and charge 35%+ + penalties.
β Error 2: Omitting "Fireproof" in description
π Consequence: Customs may view as generic chemical β Audit Risk + Delays.
β Error 3: Ignoring SDS Requirements
π Consequence: FDA/DOT rejection if hazardous chemicals are present but not declared.
β Error 4: Using Vague Terms like "Repair Paste"
π Consequence: Ambiguity β Customs chooses higher duty code (3824.99 at 41.5%).
β Correct Approach:
"Fireproof Repair Material, Low Alkali, Non-Refractory Mortar for Structural Restoration, ASTM E119 Certified, Model XYZ"
π― VII. Conclusion: Precision in Classification Saves Money!
π― Remember the Mantra:
πΉ "Fireproof Mortar: 3824.50 (35%) | Sealant: 3214 (38.7%) | Mix: 3824.99 (41.5%)"
πΉ "301 + 122 Clauses Add 35-41.5% to Base Duty β Don't Be Surprised!"
πΉ "SDS is King: No SDS, No Entry!"
π Pro Tip:
If your product is originating from Vietnam, Mexico, or Thailand, you may qualify for IEEPA Exemptions or USMCA Benefits, reducing duties to 0-5%.
Recommend Applying for Advance Ruling before shipment to confirm HS Code and duty liability.
π£ Immediate Action Required:
π Contact Licensed Customs Broker + Provide SDS + Request HS Code Pre-Ruling
π Ensure your Fireproof Repair Material clears customs smoothly, avoiding costly delays and unexpected tariffs!
β¨ Professional Customs Clearance Starts with Accurate Classification!
πΌ Every Percent of Duty Saved is Pure Profit!
Customer Reviews
About HS Code Classification
The Harmonized System (HS) is an internationally standardized nomenclature developed by the World Customs Organization (WCO) to classify traded products. Over 200 countries use the HS system as the basis for customs tariffs, trade statistics, and import/export regulations.
Each HS code follows a hierarchical structure:
- Chapter (2 digits) β Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) β More specific grouping within the chapter
- Subheading (6 digits) β Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) β Country-specific extensions for further classification, such as US HTSUS 10-digit codes
Correct HS code classification is essential for smooth customs clearance, accurate duty payment, and compliance with trade regulations. Misclassification can lead to customs delays, overpayment of duties, or penalties.
When importing from CN to US, the applicable tariff rates may include:
- Most-Favored-Nation (MFN) rate β The standard duty rate applied to WTO members
- General rate β Applied to countries without trade agreements
- Trade remedy duties β Additional tariffs such as Section 301 (anti-dumping), Section 232 (national security), or countervailing duties
The information provided on this page is for reference purposes only. For official classification, please consult with your local customs authority or a licensed customs broker.