Large Diameter Plastic Pipe Fitting
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3917400095 | 40.3% | CN | US | Official Doc |
| 3917400050 | 40.3% | CN | US | Official Doc |
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AI Analysis
π° Large Diameter Plastic Pipe Fittings (3917.40)
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Compliance Strategy
π I. Product Definition: What are "Large Diameter Plastic Pipe Fittings"?
Plastic pipe fittings are essential components in fluid transport systems, used to connect, bend, reduce, or stop the flow of liquids or gases. In international trade, specifically under Heading 3917, these fittings are classified based on their pressure rating and application.
For Large Diameter fittings (typically used in civil engineering, drainage, industrial plumbing, and large-scale infrastructure), the critical distinction lies in whether they are Pressure Rated or Non-Pressure Rated (Drain/Waste/Vent - DWV).
β οΈ Key Distinction:
- Fittings Other: General plastic fittings not specifically categorized as plumbing DWV fittings.
- Plumbing Fittings, not pressure rated (DWV): Specifically designed for drainage, waste, and vent systems (e.g., large sewer pipes, stormwater drainage).
π¦ II. HS Code Classification Details (2026 Latest Tariff Authority)
Based on the provided data, there are two specific HS Codes for "Fittings" under the plastics category. The classification depends on the specific use case and pressure rating.
| HS Code | Product Description | Application Scenario | Pressure Rating |
|---|---|---|---|
3917.40.00.95 |
Fittings Other | General industrial pipes, non-standard plastic connections, pressure pipes not classified as DWV | β Depends on specific sub-type (often pressure-rated or general purpose) |
3917.40.00.50 |
Plumbing Fittings, not pressure rated (DWV): Other | Drainage, Waste, and Vent (DWV) systems, sewer lines, stormwater drainage pipes | β Not Pressure Rated |
π Crucial Note:
- If the large diameter plastic fitting is used for drainage/sewage (DWV) and is not designed to withstand high pressure, it falls under3917.40.00.50.
- If it is a general-purpose plastic fitting or used in pressure systems (but not classified as standard plumbing DWV), it falls under3917.40.00.95.
- Large Diameter itself does not change the HS code; the function and pressure rating do.
π° III. 2026 Latest Tariff Rate Breakdown
β Applicable Country: United States (US)
β Origin: China (CN)
β Effective Date: 2025-11-10 (and subsequent imports)
π― 1. 3917.40.00.95 ββ Fittings Other
| Item | Content |
|---|---|
| Base Tariff | 0.0% (ad valorem) |
| Section 301 Additional Tariff | 0.0% |
| IEEPA Additional Tariff | 0.0% |
| Total Tariff Rate | 0.0% |
| Tax Calculation | CIF Value Γ 0.0% = $0 |
| De Minimis Eligibility | β Yes (Generally, if value < $800, may be duty-free under Section 321, but still requires proper declaration) |
| Legal Basis Path | USITC:3917.40.00.95 |
π Explanation:
- These fittings are currently exempt from additional tariffs under Section 301 and IEEPA.
- This is a highly favorable classification for cost savings.
π― 2. 3917.40.00.50 ββ Plumbing Fittings, not pressure rated (DWV): Other
| Item | Content |
|---|---|
| Base Tariff | 0.0% (ad valorem) |
| Section 301 Additional Tariff | 0.0% |
| IEEPA Additional Tariff | 0.0% |
| Total Tariff Rate | 0.0% |
| Tax Calculation | CIF Value Γ 0.0% = $0 |
| De Minimis Eligibility | β Yes (Same as above) |
| Legal Basis Path | USITC:3917.40.00.50 |
π Explanation:
- Like the "Other" category, DWV fittings are also exempt from additional tariffs.
- No tax burden for importing large diameter plastic drainage fittings from China to the US.
π οΈ IV. Customs Clearance Practical Advice (Pitfall Avoidance Guide)
β 1. Required Documentation Checklist (Must-Provides)
| Document | Required | Description |
|---|---|---|
| β Product Specification Sheet | βοΈ | Must clearly state material (e.g., PVC, HDPE, PP), diameter, and pressure rating |
| β Technical Drawings | βοΈ | Show dimensions, connection type (solvent weld, threaded, etc.) |
| β Product Photos | βοΈ | Clear images of the fitting, including any markings (e.g., "DWV", "Pressure Rated") |
| β Commercial Invoice | βοΈ | Must accurately describe the goods as "Plastic Pipe Fittings" and specify usage |
| β Packing List | βοΈ | Detail quantity, weight, and packaging type |
| β Origin Certificate (CO) | βοΈ | If applicable for other markets, but less critical for US duty-free status |
β 2. Declaration Tips (Key Rules)
π₯ βDefine Usage, Declare Material, Avoid Ambiguity!β
| Scenario | Correct Declaration | Wrong Practice |
|---|---|---|
| Sewer/Drain Fittings | 3917.40.00.50 - "Plastic DWV Fittings, Not Pressure Rated" |
Misdeclare as "Pressure Pipes" β Potential audit |
| Industrial Pressure Fittings | 3917.40.00.95 - "Plastic Pipe Fittings, General Use" |
Misdeclare as "DWV" if they are pressure-rated β Misclassification risk |
| Mixed Batch | Separate lines in invoice for DWV vs. Non-DWV | Mix all under one generic code β High risk of rejection |
β 3. Special Cases & Handling
| Case | Handling Advice |
|---|---|
| Large Diameter (> 6 inches) | Provide dimensional specs to prove itβs "Large Diameter" if required for statistical purposes, though HS code remains the same |
| Material Type | Specify PVC, HDPE, ABS, etc. in the description to avoid classification under other headings (e.g., 3917.21 for rigid tubes) |
| Pressure Rating | Critical! If the fitting is pressure-rated, it cannot be declared as DWV (3917.40.00.50). It must be 3917.40.00.95. Misdeclaration can lead to penalties. |
| Used/Recycled | If fittings are used, additional restrictions may apply. Declare as "New" if applicable. |
π V. Global Market Comparison (2026)
| Country/Region | Recommended HS Code | Tariff Rate | Notes |
|---|---|---|---|
| πΊπΈ USA | 3917.40.00.95 or 3917.40.00.50 |
0.0% | Excellent duty-free status |
| π¨π³ China | 3917.40.00.00 (Import) |
Varies | Check local tariff schedules |
| πͺπΊ EU | 3917.21 or 3917.29 |
0% - 4.5% | Depends on exact type |
| π¬π§ UK | 3917.21 or 3917.29 |
0% - 4.5% | Post-Brexit tariffs apply |
π Conclusion:
- The USA offers 0% tariff for both categories of large diameter plastic pipe fittings.
- This makes US imports highly competitive, provided the classification is accurate.
π VI. Common Mistakes & Pitfall Guide
β Mistake 1: Declaring pressure-rated fittings as DWV (3917.40.00.50)
π Consequence: Customs may reclassify, leading to delayed clearance or misclassification penalties.
π Solution: Verify pressure rating with manufacturer specs.
β Mistake 2: Not specifying material (e.g., PVC vs. HDPE)
π Consequence: Customs may request additional info, causing delays.
π Solution: Clearly state material in the description.
β Mistake 3: Mixing DWV and Pressure fittings in one HS Code line
π Consequence: High risk of audit or rejection.
π Solution: Separate line items for different types.
β Correct Declaration Example:
"Plastic Pipe Fittings, HDPE, Large Diameter, Not Pressure Rated, For Drainage/Waste/Vent (DWV) Systems, Model XYZ"
π― VII. Conclusion: Professional Declaration, Smooth Clearance, Cost Savings!
π― Remember the Rules:
πΉ "DWV = 50, Pressure/Other = 95, Both 0% Tax!"
πΉ "Specify Usage, Avoid Ambiguity, Clear Customs Fast!"
π Pro Tip:
- If you are importing very large volumes, consider applying for an Advance Ruling from US Customs (CBP) to confirm the correct HS Code.
- Ensure your commercial invoice matches the packing list and product specs exactly.
π£ Action Required:
π Consult with a licensed customs broker if unsure about pressure ratings.
π Accurate classification ensures zero tariff and smooth clearance for your large diameter plastic pipe fittings.
β¨ Professional Customs Clearance Starts with Accurate Classification!
πΌ Your Cost Efficiency Depends on Precision!
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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.