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Fire Extinguishing Agent Conduit Pipe

CN → US
HS编码 关税税率 原产国 目的国 文档
3917390050 13.1% CN US 官方文档
3917290090 38.1% CN US 官方文档
8424900500 17.5% CN US 官方文档
7307110060 14.8% CN US 官方文档
8424909080 85.0% CN US 官方文档

商品图片

AI分析

🚒 Fire Extinguishing Agent Conduit Pipe


🌐 HS Code Reference & Customs Clearance Guide | 2024/2025 Latest Tariff Analysis | Professional Entry Strategy
📌 I. Product Definition & Classification: What exactly is a "Fire Extinguishing Agent Conduit Pipe"?

Fire Extinguishing Agent Conduit Pipes are critical components of fire protection systems, designed to transport extinguishing agents (such as water, foam, CO₂, or dry chemical powder) from the source to the discharge nozzles.

In international trade, these pipes are not classified as a single uniform product. The Harmonized System (HS) classification depends heavily on three factors: 1. Material: Plastic, Metal (Iron/Steel), or Rubber. 2. Function/End-Use: Is it a standalone pipe, a part of a fire extinguisher, or an accessory for piping systems? 3. Connection Type: Is it a simple tube, a fitting/connector, or a specialized hose?

⚠️ Key Distinction Point:
- If it is a plastic pipe used for conveying fluids → Likely Chapter 39.
- If it is a metal pipe/fitting used for standard piping → Likely Chapter 73.
- If it is considered a part of a fire extinguisher appliance → Likely Chapter 84.


📦 II. HS Code Classification Details (2024/2025 Latest Tariff Authority Comparison)

HS Code Product Description Applicable Scenario Material/Function
3917.39.00.50 Other tubes, pipes, and hoses, and fittings thereof, not elsewhere specified or included Standalone plastic conduit pipes for fire suppression systems Plastic
3917.29.00.90 Other tubes, pipes, and hoses, rigid, of plastics Rigid plastic pipes, often with higher trade restrictions Plastic
8424.90.05.00 Parts of mechanical appliances for projecting, dispersing, or spraying liquids or powders Fire Extinguisher Parts: Pipes/hoses specifically identified as components of extinguishers Metal/Rubber
7307.11.00.60 Tubes, pipes, and hollow profiles, of iron or steel, threaded or not (Fittings) Iron/Steel Pipe Fittings: Connectors, joints, or fittings for metal piping systems Iron/Steel
8424.90.90.80 Parts of other apparatuses for projecting, dispersing, or spraying liquids or powders General "Other Parts" for spraying machinery, often used when specific material codes don't fit Various (Steel/Aluminum/Copper)

🔍 Key Reminder:
- Plastic Pipes (3917...) are heavily impacted by Section 301 Tariffs (25%) and 122 Section Tariffs (10%).
- Metal Fittings (7307...) have lower base tariffs but still face the 122 Section tariff.
- Parts of Extinguishers (8424.90.05.00) may have 0% base tariff but still attract Section 232/122 surcharges depending on specific customs rulings.


💰 III. 2024/2025 Latest Tariff Rate Breakdown (Including Additional Duties)

Applicable Country: United States (US)
Origin: China (CN)
Effective Time: Current as of latest trade action updates

🎯 1. 3917.39.00.50 —— Plastic Conduit Pipes

Item Detail
Base Tariff 3.1% (ad valorem)
Section 301 Tariff 0.0% (Not listed in current 301 exclusion for this specific subheading in some contexts, or excluded)
Section 122 Tariff 10.0% (Targeted at specific Chinese imports)
Total Tax Rate 13.1%
Tax Calculation CIF Value × 13.1%
De Minimis Exemption Not Applicable (Value usually exceeds $800)
Legal Basis Path HTSUS:3917.39.00.50USITC:122

📌 Explanation:
- This code is for plastic pipes not otherwise specified.
- The 13.1% rate is significantly lower than other plastic codes because it avoids the 25% Section 301 tariff.
- Customs Warning: Ensure the product is strictly "Plastic" and not "Rigid PVC" which might fall under 3917.29 (see below).


🎯 2. 3917.29.00.90 —— Other Rigid Plastic Pipes

Item Detail
Base Tariff 3.1%
Section 301 Tariff 25.0% (Highly restricted category)
Section 122 Tariff 10.0%
Total Tax Rate 38.1%
Tax Calculation CIF Value × 38.1%
De Minimis Exemption Not Applicable
Legal Basis Path HTSUS:3917.29.00.90USITC:301USITC:122

📌 Critical Warning:
- If your pipe is deemed "Rigid" and falls under this subheading, the tax jumps to 38.1%.
- This is due to the 25% Section 301 tariff applied to many plastic products from China.
- Strategy: Confirm with suppliers if the pipe can be classified under 3917.39 (softer/flexible/other) to save 25%.


🎯 3. 8424.90.05.00 —— Parts of Fire Extinguishers

Item Detail
Base Tariff 0.0%
Section 232 Tariff 7.5% (Steel/Aluminum related, but applied broadly in some rulings)
Section 122 Tariff 10.0%
Total Tax Rate 17.5%
Tax Calculation CIF Value × 17.5%
De Minimis Exemption Not Applicable
Legal Basis Path HTSUS:8424.90.05.00USITC:232USITC:122

📌 Explanation:
- This code is ideal if the pipe is explicitly marketed as a replacement part for a fire extinguisher.
- Base tariff is 0%, but the 17.5% total still applies due to additional duties.
- Key Advantage: Lower than the 38.1% for rigid plastics.


🎯 4. 7307.11.00.60 —— Iron/Steel Pipe Fittings

Item Detail
Base Tariff 4.8%
Section 301 Tariff 0.0% (Often excluded for specific fittings)
Section 122 Tariff 10.0%
Total Tax Rate 14.8%
Tax Calculation CIF Value × 14.8%
De Minimis Exemption Not Applicable
Legal Basis Path HTSUS:7307.11.00.60USITC:122

📌 Explanation:
- For metal (iron/steel) fittings (connectors, joints).
- 14.8% is a competitive rate, slightly higher than plastic 3917.39 but much lower than rigid plastic 3917.29.
- Ensure the product is clearly a fitting (threaded/unthreaded connector) rather than a long pipe.


🎯 5. 8424.90.90.80 —— Other Parts of Spraying Appliances

Item Detail
Base Tariff 0.0%
Section 301 Tariff 25.0%
Section 122 Tariff 10.0%
Steel/Aluminum/Copper Surcharge +50.0% (If material is steel/aluminum/copper)
Total Tax Rate 85.0% (Up to)
Tax Calculation CIF Value × 85.0%
De Minimis Exemption Not Applicable
Legal Basis Path HTSUS:8424.90.90.80USITC:301USITC:122

🚨 DANGER ZONE:
- This is the highest risk code.
- If the pipe is made of Steel, Aluminum, or Copper, and falls under "Other Parts," you may face an additional 50% tariff.
- Total Tax: 85% is devastating for margins.
- Avoid this code if possible by using 8424.90.05.00 (if applicable) or 7307... (if fittings).


🛠️ IV. Customs Clearance Practical Advice (Pitfall Avoidance Guide)

✅ 1. Preparation Checklist (Essential Documents)

Document Required Notes
Product Specification Sheet ✔️ Must specify Material (Plastic/Metal), Diameter, Pressure Rating.
Product Photos ✔️ Show ends (threaded? smooth?), joints, and any markings.
Commercial Invoice ✔️ Description must match HS Code logic (e.g., "Plastic Conduit Pipe" vs. "Steel Fitting").
Bill of Lading ✔️ Ensure packaging quantity matches invoice.
Letter of Explanation Optional but Recommended If borderline between 8424.90.05.00 (Parts) and 3917... (Pipes), explain why it's a part.

✅ 2. Declaration Tips (Key Mnemonics)

🔥 "Material First, Function Second. Don't Mix Codes!"

Situation Correct Declaration Common Error
Plastic Pipe Use 3917.39.00.50 (13.1%) Using 3917.29.00.9038.1% (Save 25%!)
Metal Connector/Fitting Use 7307.11.00.60 (14.8%) Using 8424.90.90.8085% (Avoid!)
Pipe as Extinguisher Part Use 8424.90.05.00 (17.5%) Using 3917.39 if it's clearly metal/exclusive part
Mixed Package (Pipe+Fittings) Declare separately or use main component Combine into one code → Audit Risk

✅ 3. Special Scenarios

Scenario Recommendation
OEM for Fire System Manufacturer Provide a Letter from Buyer stating these are "Parts of Fire Extinguishing Systems" to support 8424.90.05.00.
Plastic vs. Rigid Plastic If the pipe is flexible or semi-rigid, argue for 3917.39 (13.1%). If rigid PVC/CPVC, expect 3917.29 (38.1%).
Metal Pipes If long pipes (not fittings), they may still fall under 7306 (Pipes of Iron/Steel). Check base rate (often 0-2.5%) + 301/122. If they are fittings/joints, use 7307 (14.8%).
Steel/Aluminum/Copper Parts Avoid 8424.90.90.80. Use specific material chapters (73, 76, 74) + 301/122 instead of the "Other Parts" code which triggers the 50% surcharge.

🌍 V. Global Market Clearance Comparison (2024/2025)

Country/Region Recommended HS Code Tariff Rate (China Origin) Certification Required Notes
🇺🇸 USA 3917.39.00.50 / 7307.11.00.60 13.1% - 14.8% UL, FM (Optional but recommended) Highest complexity due to 301/122 tariffs.
🇨🇳 China 3917 / 7307 Low/Zero CCC (if applicable) No additional tariffs.
🇪🇺 EU 3917 / 7307 0% - 4.5% CE, LPCB (For fire safety) No Section 301/122 equivalents.
🇬🇧 UK 3917 / 7307 0% - 4.5% UKCA Post-Brexit rules apply.

📌 Conclusion:
- The US market is the most challenging due to Section 301 (25%) and Section 122 (10%) tariffs.
- European Union and China have much lower barriers.
- Strategy: For US exports, prioritize 3917.39 (Plastic, 13.1%) and 7307 (Metal Fittings, 14.8%). Avoid "Parts" codes (8424.90.90) that trigger 85% rates.


📌 VI. Common Mistakes & Pitfalls (Lessons Learned)

Mistake 1: Classifying Plastic Pipes as 3917.29 (Rigid)
👉 Result: Tax jumps from 13.1% to 38.1%Loss of Profit.
👉 Fix: Prove flexibility or use "Other" subheading.

Mistake 2: Classifying Steel Pipes/Fittings as 8424.90.90.80 (Other Parts)
👉 Result: Tax hits 85% (due to 50% steel surcharge) → Catastrophic Cost.
👉 Fix: Use Chapter 73 (7307) for metal fittings.

Mistake 3: Ignoring Section 122 Tariff (10%)
👉 Result: Even with 0% Base Tariff, you pay 10-35% extra.
👉 Fix: Factor this into all China-origin imports.

Correct Approach:

"Plastic Fire Conduit Pipe, Flexible, 2-inch Diameter, Model ABC" → 3917.39.00.50
"Steel Pipe Connector, Threaded, 1-inch, Model DEF" → 7307.11.00.60


🎯 VII. Conclusion: Professional Declaration Saves Money!

🎯 Remember the Mantra:

🔹 "Plastic Flexible? 13.1%. Plastic Rigid? 38.1%!"
🔹 "Steel Fitting? 14.8%. Steel Part? 85%!"
🔹 "Part of Extinguisher? 17.5%. Other Part? 85%!"


📌 Pro Tip:

If your product is exclusively used for fire extinguishers, get a Pre-Ruling (Advance Ruling) from US CBP to confirm 8424.90.05.00 (17.5%) instead of generic pipe codes. This can provide legal certainty and potentially avoid the highest tariffs.


📣 Immediate Action:

📞 Consult your customs broker with product photos and material specs.
🚀 Optimize your HS Code to save up to 70% in duties.


Professional Customs Clearance Starts with Precise Classification!
💼 Your Profit Margin Depends on This 8-Digit Code!

用户评价

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。

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。