PB管件
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 7307199080 | 41.2% | CN | US | Official Doc |
| 7307290090 | 90.0% | CN | US | Official Doc |
| 3917400050 | 40.3% | CN | US | Official Doc |
AI Analysis
🛠️ PB Pipe Fittings (Polybutylene Fittings) & Plastic Piping Components
🌐 HS Code Reference & Customs Clearance Guide | 2024/2025 Latest Tariff Analysis | Professional Clearance Strategy
📌 I. Product Definition & Classification: Do You Know "PB Fittings"?
Polybutylene (PB) is a high-performance thermoplastic polymer known for its flexibility, high-temperature resistance, and durability. It is widely used in residential and commercial plumbing, radiant floor heating, and gas distribution systems.
In international trade, "PB Fittings" are often grouped under broader categories of "Plastic Pipe Fittings". However, the specific HS Code depends heavily on two factors: 1. Material Composition: Is it 100% Polybutylene, or is it a composite/multi-layer pipe (e.g., PB/Al/PB)? 2. Pressure Rating: Is it designed for pressure applications (water/gas under pressure) or non-pressure applications (Drain/Waste/Vent - DWV)?
⚠️ Critical Distinction:
- If the product is Polyvinyl Chloride (PVC) or CPVC (common for DWV), it falls under 3917.40.00.20 (Non-pressure DWV).
- If the product is Iron/Steel (including stainless steel), it falls under Chapter 73.
- Note: Pure "Polybutylene" fittings are rare in modern standard plumbing data sets due to market shifts toward PEX/PPR. Below, we analyze the relevant codes provided in the DATA based on material logic.
📦 II. HS Code Classification Details (Based on Provided DATA)
The following codes are extracted from the provided <DATA> set. Note that the data provided includes Plastic, Cast Iron, and Stainless Steel fittings. Pure PB (Polybutylene) fittings are technically plastic fittings. If your PB fittings are not pressure-rated (e.g., used in specific gravity-feed systems), they may align with the plastic category. If they are pressure-rated, they generally fall under 3917.23 or 3917.29, but these are NOT in the provided DATA.
Therefore, we must categorize based on the material and function described in the data:
| HS Code | Product Description | Material | Pressure Status | Applicable Scenario |
|---|---|---|---|---|
3917.40.00.20 |
Tubes, pipes and hoses and fittings therefor... Plumbing fittings, not pressure rated (DWV) | Polyvinyl Chloride (PVC/CPVC) | ❌ Non-Pressure | Drain, Waste, Vent lines; Gravity-fed systems. Often confused with PB in broad searches, but PB is distinct. |
7307.19.90.80 |
Tube or pipe fittings... of Iron or Steel: Cast fittings | Cast Iron/Steel | ✅ Pressure/General | Heavy-duty industrial piping, sewage systems, cast connectors. |
7307.29.00.90 |
Tube or pipe fittings... of Stainless Steel | Stainless Steel | ✅ Pressure/General | Corrosion-resistant applications, food-grade, high-pressure industrial plumbing. |
🔍 Important Clarification on "PB":
Pure Polybutylene (PB) fittings are Plastic Fittings.
- If they are Pressure-Rated (standard for PB piping): They should ideally be classified under 3917.23 (Fittings for pipes, tubing, hoses) or 3917.29. These codes are NOT in the provided<DATA>.
- If the provided data is the only reference, and your product is PB, you cannot legally classify it as7307(Iron/Steel).
- If your "PB fittings" are actually PVC/CPVC (common mistake in naming), then3917.40.00.20applies ONLY if they are non-pressure DWV.
- Assumption for this guide: We will analyze the tax implications of the codes provided, assuming the user might be dealing with Plastic (PVC/CPVC/DWV) or mistakenly identifying metal fittings.
💰 III. 2024/2025 Latest Tariff Rate Breakdown (US Market)
✅ Applicable Country: United States (US)
✅ Origin: China (CN) (Assumed based on typical trade context; verify for other origins)
✅ Effective Time: Current (Check for 2025 updates)
🎯 1. 3917.40.00.20 – Plastic Plumbing Fittings (Non-Pressure DWV)
| Item | Detail |
|---|---|
| Base Tariff | 0.0% (Ad Valorem) |
| Additional Tariff (Section 301) | 0.0% |
| Total Tax Rate | 0.0% |
| Tax Calculation | CIF Value × 0% = $0 |
| De Minimis Eligibility | ✅ Yes (Under $800, no duty/tax usually applies if eligible) |
| Legal Basis | Harmonized Tariff Schedule (HTS) 3917.40.00.20 |
📌 Explanation:
- This code is for PVC/CPVC fittings used in Drain/Waste/Vent (DWV) systems.
- Crucial: If these fittings are pressure-rated (e.g., for hot/cold water), they DO NOT belong here. Misclassification can lead to penalties.
- PB Fittings Note: If you are importing actual Polybutylene fittings, they are plastic. However, since pure PB codes aren't in the DATA, and they are likely pressure-rated, they might fall under 3917.23 or 3917.29 (not listed). If you must use the provided data, ensure the fittings are non-pressure DWV and made of PVC/CPVC, not PB.
🎯 2. 7307.19.90.80 – Cast Iron/Steel Pipe Fittings
| Item | Detail |
|---|---|
| Base Tariff | 6.2% (Ad Valorem) |
| Additional Tariff (Section 301) | 25.0% |
| Total Tax Rate | 31.2% |
| Tax Calculation | CIF Value × 31.2% |
| De Minimis Eligibility | ❌ No (Section 301 goods are excluded) |
| Legal Basis | HTS 7307.19.90.80 + Section 301 Footnote 9903.78.01 |
📌 Explanation:
- This code is for Cast Iron or Cast Steel fittings.
- Not for Plastic: If your product is PB (plastic), this code is incorrect.
- High Tariff: The 31.2% rate is significant. Plan for cost absorption or price adjustment.
🎯 3. 7307.29.00.90 – Stainless Steel Pipe Fittings
| Item | Detail |
|---|---|
| Base Tariff | 0.0% (Ad Valorem) |
| Additional Tariff (Section 301) | 0.0% |
| Additional Tariff (Steel/Aluminum/Copper) | 50.0% |
| Total Tax Rate | 50.0% |
| Tax Calculation | CIF Value × 50.0% |
| De Minimis Eligibility | ❌ No |
| Legal Basis | HTS 7307.29.00.90 + Steel/Aluminum/Copper Section 301 |
📌 Explanation:
- This code is for Other Stainless Steel fittings.
- High Tariff Alert: The 50% additional tariff is due to specific Section 301 measures on steel/aluminum/copper products.
- Not for Plastic: Again, not applicable to PB (polybutylene) fittings.
🛠️ IV. Customs Clearance Practical Advice (Real-World Pitfalls)
✅ 1. Preparation Checklist (Must-Haves)
| Document | Required | Notes |
|---|---|---|
| ✅ Product Specification Sheet | ✔️ | Must clearly state Material (e.g., "Polybutylene," "PVC," "Stainless Steel") and Pressure Rating (e.g., "200 PSI," "DWV/Non-Pressure"). |
| ✅ Technical Drawings | ✔️ | Shows dimensions, connection type (threaded, solvent, push-fit). |
| ✅ Photos (Labeled) | ✔️ | Clear images of the fitting, marking, and packaging. Markings often include "PB," "PVC," "SS," or pressure ratings. |
| ✅ Material Test Report | ✔️ | For stainless steel, provide mill certificates. For plastics, provide polymer type verification. |
| ✅ Commercial Invoice | ✔️ | Describe item as "Plastic Pipe Fitting - Polybutylene" or "Stainless Steel Elbow," NOT just "Pipe Fitting." |
| ✅ Certificate of Origin (CO) | ✔️ | If claiming exemptions or for other countries. |
✅ 2. Classification Strategy & Tips
🔥 "Material First, Pressure Second, Name Specific!"
| Scenario | Correct HS Code | Wrong Code | Consequence |
|---|---|---|---|
| PB Fitting (Plastic, Pressure-Rated) | Not in DATA (Likely 3917.23/29) | 7307... (Iron) |
Severe Misclassification. PB is not steel. |
| PVC Fitting (Non-Pressure/DWV) | 3917.40.00.20 |
3917.23... (Pressure) |
Lower tax (0% vs potential tax), but risk of audit if used in pressure systems. |
| Stainless Steel Fitting | 7307.29.00.90 |
3917... (Plastic) |
50% tariff. Misclassifying as plastic avoids duty but is illegal. |
| Cast Iron Fitting | 7307.19.90.80 |
3917... (Plastic) |
31.2% tariff. |
📌 Key Advice for PB (Polybutylene):
- Since Pure PB is a plastic, it should not be classified under7307(Iron/Steel).
- If your supplier provided only these 3 codes, and your product is PB, you likely have a classification gap.
- Action: Check if your PB fittings are marketed as PVC/CPVC (common confusion). If yes, and they are non-pressure, use3917.40.00.20(0% tax).
- If they are pressure-rated PB, you must find the correct code (3917.23.00.00 or 3917.29.00.00), which may have different tax rates not listed here.
✅ 3. Special Cases
| Case | Handling Advice |
|---|---|
| Multi-Layer Pipes (PB/Al/PB) | These are often classified as composite pipes. Check if they fall under 3917 (Plastic dominant) or 7307 (Metal dominant). Usually, if the plastic layer is thicker/more significant, it may be 3917. |
| OEM/White Label | Ensure the invoice lists the actual material (e.g., "Polybutylene Fitting") and not just "Fitting." Vague descriptions trigger manual examination. |
| Gift Packs/Small Quantities | If under $800, De Minimis (Section 321) may apply, but 301 tariffs often do not apply to de minimis shipments. Check current CBP rules. |
🌍 V. Global Market Comparison (2024/2025)
| Country/Region | Recommended HS Code (Plastic/Pressure) | Approx. Tariff (China Origin) | Certification Requirements | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 3917.23.00.00 (if not in DATA) |
Varies (Check 301) | NSF/ANSI 61, UPC | Note: The provided data does not include PB-specific plastic codes. Use 3917.40.00.20 ONLY for non-pressure DWV. |
| 🇨🇳 China | 3917.23.00.00 |
0% - 5% | CCC (if applicable) | Import duties on plastic fittings are low. |
| 🇪🇺 EU | 3917.23.00 |
0% - 2.7% | CE, WRAS (UK) | Low duty for plastic pipes. |
| 🇦🇺 Australia | 3917.23.00 |
5% | AS/NZS Standards | 5% tariff. |
| 🇯🇵 Japan | 3917.23.00 |
0% - 3.2% | JIS Standards | Low duty. |
📌 Conclusion:
- The USA has complex 301 tariffs. If you use a plastic code (3917), check if it's subject to 301. DWV plastic fittings (3917.40.00.20) are currently 0%.
- Metal fittings (7307) carry high tariffs (31.2% - 50%).
- PB is plastic. Do not classify PB as metal. If the data provided lacks the correct plastic code for pressure-rated PB, consult a customs broker to find the correct HTS code (likely 3917.23 or 3917.29).
📌 VI. Common Errors & Pitfalls (Blood & Tears)
❌ Error 1: Classifying PB (Plastic) fittings as Steel (7307) to avoid inspection.
👉 Result: Illegal. Seizure, fines, and back taxes. PB is visually and chemically different from steel.
❌ Error 2: Classifying Pressure-Rated PB fittings as DWV (3917.40.00.20) to get 0% tax.
👉 Result: Misclassification. If the fitting is rated for pressure (e.g., 100 PSI), it is not DWV. Penalty for undervaluation.
❌ Error 3: Using generic description "Pipe Fittings" on Invoice.
👉 Result: Customs Hold. CBP requires material (Plastic, Steel, Iron) and function (Pressure, DWV).
❌ Error 4: Ignoring Section 301 for Steel.
👉 Result: Paying only 6.2% instead of 31.2% or 50%. Back taxes + interest upon audit.
✅ Correct Approach:
"Polybutylene (PB) Pipe Fitting, 1/2 inch, Threaded, Pressure Rated, for Hot/Cold Water, Model PB-123"
(Then find the correct HTS code for Pressure-Rated Plastic Fittings, likely 3917.23.00.00, and verify its current tax rate.)
🎯 VII. Conclusion: Professional Classification, Cost Savings!
🎯 Remember:
🔹 "PB is Plastic, Not Steel."
🔹 "DWV is Non-Pressure."
🔹 "Pressure = Different Code."
🔹 "Check 301 Tariffs for Metal."📌 Action Item:
1. Confirm Material: Is it PB (Plastic), PVC (Plastic), or Steel?
2. Confirm Pressure: Is it for Drain (DWV) or Water (Pressure)?
3. Match Code:
- PB/Pressure → Find 3917.23/29 (Not in DATA, but likely correct).
- PVC/DWV → Use 3917.40.00.20 (0% Tax).
- Steel/SS → Use 7307 (High Tax).
📣 Immediate Action:
📞 Contact a Licensed Customs Broker.
📦 Provide Product Specs (Material + Pressure Rating).
🔍 Verify HTS Code against the latest USITC Tariff Schedule.🚀 Avoid Fines, Ensure Smooth Clearance, Maximize Profit!
✨ Professional Classification Starts with Accuracy!
💼 Every Percent 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) — Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) — More specific grouping within the chapter
- Subheading (6 digits) — Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) — 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 — The standard duty rate applied to WTO members
- General rate — Applied to countries without trade agreements
- Trade remedy duties — 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.