large diameter plastic pipe fitting
CN → US| HS编码 | 关税税率 | 原产国 | 目的国 | 文档 |
|---|---|---|---|---|
| 3917400095 | 40.3% | CN | US | 官方文档 |
| 3917400050 | 40.3% | CN | US | 官方文档 |
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AI分析
🚰 Large Diameter Plastic Pipe Fittings (3917.40)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Compliance Strategy
📌 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).
⚠️ 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).
📦 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 | ❓ 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 | ❌ Not Pressure Rated |
🔍 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.
💰 III. 2026 Latest Tariff Rate Breakdown
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Date: 2025-11-10 (and subsequent imports)
🎯 1. 3917.40.00.95 —— 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 × 0.0% = $0 |
| De Minimis Eligibility | ✅ 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 |
📌 Explanation:
- These fittings are currently exempt from additional tariffs under Section 301 and IEEPA.
- This is a highly favorable classification for cost savings.
🎯 2. 3917.40.00.50 —— 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 × 0.0% = $0 |
| De Minimis Eligibility | ✅ Yes (Same as above) |
| Legal Basis Path | USITC:3917.40.00.50 |
📌 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.
🛠️ IV. Customs Clearance Practical Advice (Pitfall Avoidance Guide)
✅ 1. Required Documentation Checklist (Must-Provides)
| Document | Required | Description |
|---|---|---|
| ✅ Product Specification Sheet | ✔️ | Must clearly state material (e.g., PVC, HDPE, PP), diameter, and pressure rating |
| ✅ Technical Drawings | ✔️ | Show dimensions, connection type (solvent weld, threaded, etc.) |
| ✅ Product Photos | ✔️ | Clear images of the fitting, including any markings (e.g., "DWV", "Pressure Rated") |
| ✅ Commercial Invoice | ✔️ | Must accurately describe the goods as "Plastic Pipe Fittings" and specify usage |
| ✅ Packing List | ✔️ | Detail quantity, weight, and packaging type |
| ✅ Origin Certificate (CO) | ✔️ | If applicable for other markets, but less critical for US duty-free status |
✅ 2. Declaration Tips (Key Rules)
🔥 “Define Usage, Declare Material, Avoid Ambiguity!”
| Scenario | Correct Declaration | Wrong Practice |
|---|---|---|
| Sewer/Drain Fittings | 3917.40.00.50 - "Plastic DWV Fittings, Not Pressure Rated" |
Misdeclare as "Pressure Pipes" → Potential audit |
| Industrial Pressure Fittings | 3917.40.00.95 - "Plastic Pipe Fittings, General Use" |
Misdeclare as "DWV" if they are pressure-rated → Misclassification risk |
| Mixed Batch | Separate lines in invoice for DWV vs. Non-DWV | Mix all under one generic code → High risk of rejection |
✅ 3. Special Cases & Handling
| Case | Handling Advice |
|---|---|
| Large Diameter (> 6 inches) | Provide dimensional specs to prove it’s "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. |
🌍 V. Global Market Comparison (2026)
| Country/Region | Recommended HS Code | Tariff Rate | Notes |
|---|---|---|---|
| 🇺🇸 USA | 3917.40.00.95 or 3917.40.00.50 |
0.0% | Excellent duty-free status |
| 🇨🇳 China | 3917.40.00.00 (Import) |
Varies | Check local tariff schedules |
| 🇪🇺 EU | 3917.21 or 3917.29 |
0% - 4.5% | Depends on exact type |
| 🇬🇧 UK | 3917.21 or 3917.29 |
0% - 4.5% | Post-Brexit tariffs apply |
📌 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.
📌 VI. Common Mistakes & Pitfall Guide
❌ Mistake 1: Declaring pressure-rated fittings as DWV (3917.40.00.50)
👉 Consequence: Customs may reclassify, leading to delayed clearance or misclassification penalties.
👉 Solution: Verify pressure rating with manufacturer specs.
❌ Mistake 2: Not specifying material (e.g., PVC vs. HDPE)
👉 Consequence: Customs may request additional info, causing delays.
👉 Solution: Clearly state material in the description.
❌ Mistake 3: Mixing DWV and Pressure fittings in one HS Code line
👉 Consequence: High risk of audit or rejection.
👉 Solution: Separate line items for different types.
✅ Correct Declaration Example:
"Plastic Pipe Fittings, HDPE, Large Diameter, Not Pressure Rated, For Drainage/Waste/Vent (DWV) Systems, Model XYZ"
🎯 VII. Conclusion: Professional Declaration, Smooth Clearance, Cost Savings!
🎯 Remember the Rules:
🔹 "DWV = 50, Pressure/Other = 95, Both 0% Tax!"
🔹 "Specify Usage, Avoid Ambiguity, Clear Customs Fast!"
📌 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.
📣 Action Required:
📞 Consult with a licensed customs broker if unsure about pressure ratings.
🚀 Accurate classification ensures zero tariff and smooth clearance for your large diameter plastic pipe fittings.
✨ Professional Customs Clearance Starts with Accurate Classification!
💼 Your Cost Efficiency Depends on Precision!
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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。