🧵 Synthetic Fiber Duck Fabric: HS Code Classification & Customs Clearance Guide (2026)

🌐 HS Code Reference & Customs Strategy | Precision Classification for Synthetic Textiles
📌 Product Focus: Synthetic Fiber Duck Fabric

"Duck Fabric" is a general trade term often referring to heavy-duty, plain-weave, or tight-weave fabrics known for durability. However, in international customs classification (HS Code), "Duck" is not a standalone HS heading. It must be broken down by: 1. Fiber Content (Synthetic vs. Natural) 2. Weave Structure (Knitted vs. Woven) 3. Manufacturing Process (Plain, Satin, etc.)

Based on the provided dataset, we are dealing with Synthetic Fibers. The critical distinction in your data is between Knitted structures (Headings 6001, 6005, 6006) and the specific subheadings provided.

⚠️ Critical Clarification:
Standard "Duck" is usually woven. However, your provided HS codes are all KNITTED or WARP-KNITTED fabrics (Heading 60xx).
If your product is a woven fabric (like canvas/denim), these HS codes are INCORRECT and likely belong to Headings 5209-5516. The following analysis strictly adheres to the provided KNITTED/WARP-KNITTED HS codes in your dataset.

📦 1. HS Code Classification Matrix (Based on Provided Data)

The following table breaks down the 5 HS codes provided in your data, explaining why they apply and their tax implications.

🔍 2. Deep Dive: Why This HS Code?

🅰️ Why Heading 60xx (Knitted Fabric)?

The term "Duck" can sometimes refer to thick, heavy fabrics. If your fabric is made by interlocking loops of yarn (knitting), it falls under Chapter 60. * 6001: Pile fabrics (e.g., fleece, terry). * 6005: Warp-knitted fabrics (e.g., tricot, raschel). * 6006: Other knitted fabrics (e.g., single jersey, double jersey, interlock).

🅱️ Tax Rate Analysis: Why the Discrepancy?

The main difference in your data is the Section 301 Tariff (US Trade Remedy).

✅ Scenario A: 27.2% Total (HS 6001.22.00.00)

• Base Tariff: 17.2%
• Section 301: 0% (Exempt or not applicable for this specific subheading)
• Section 122: 10%
• Why? This subheading likely refers to specific types of pile fabrics (e.g., fleece) that may have different treatment status or are excluded from the highest 301 bracket.

⚠️ Scenario B: 45.0% Total (HS 6006 & 6005 variants)

• Base Tariff: 10.0%
• Section 301: 25%
• Section 122: 10%
• Why? Most standard synthetic knitted fabrics (jersey, rib, warp-knit) are subject to the full 25% Section 301 tariff because they are considered standard manufacturing inputs.

🚨 Scenario C: 52.2% Total (HS 6001.10.20.00)

• Base Tariff: 17.2%
• Section 301: 25%
• Section 122: 10%
• Why? This is the highest tax bracket in your data. It combines the higher base rate (17.2%) with the 25% penalty tariff. This is likely a specific pile fabric subtype that is not eligible for any 301 exclusion.

💰 3. Tax Clause Breakdown (Detailed Explanation)

📌 Key Insight:
- Section 301 (25%) is the biggest variable. If your product qualifies for an Exclusion (USTR List 3 or 4), this 25% can be removed, dropping your total tax to 17.2% - 27.2%.
- Section 122 (10%) is fixed in your data, meaning it applies regardless of 301 status.

🛠️ 4. Customs Clearance Strategy & Recommendations

✅ 1. Product Identification: Is It Really "Knitted"?

• Action: Verify the fabric structure under a microscope.
• If Woven (threads cross at right angles): STOP. These HS codes are wrong. You likely need 5513 (Synthetic Staple Fiber Woven) or 5407 (Synthetic Filament Woven).
• If Knitted (loops of yarn): Proceed with the HS codes above.

✅ 2. Documentation Requirements

✅ 3. Customs Advice: How to Minimize Tax

1. Check for USTR Exclusions:
   • Search USTR Exclusion Lists for HS 6006.32.00.80 or 6006.31.00.80.
   • If included, your tax drops from 45% to 17.2% (saving 27.8%!).
2. Avoid "Duck" Terminology:
   • Do not declare as "Duck Fabric" alone. Use "Synthetic Fiber Knitted Fabric, 100% Polyester, Single Jersey" or "Synthetic Warp-Knitted Tricot Fabric".
   • Ambiguous terms lead to classification errors and delays.
3. Pre-Ruling Application:
   • For large shipments, apply for an Advance Ruling from CBP to confirm the HS code and tax rate before shipment.

✅ 4. Common Pitfalls

• Pitfall 1: Misclassifying Woven Duck as Knitted Fabric.
  • Result: Severe penalty, back taxes, and possible seizure.
• Pitfall 2: Ignoring Section 122.
  • Result: Underpayment of the 10% fixed tariff.
• Pitfall 3: Assuming all synthetic knits are 25% taxed.
  • Result: Missing the opportunity to apply for Exclusions for HS 6001.22.00.00 (which has 0% 301 tax).

🌍 5. Global Market Comparison (Contextual)

📌 Note: Only the US applies the punitive Section 301 and Section 122 tariffs shown in your data. Other markets are significantly cheaper.

📌 6. Summary & Final Recommendation

1. Confirm Structure: Ensure the fabric is Knitted, not Woven. If Woven, these HS codes are invalid.
2. Select Best HS Code:
   • If it’s a Pile Fabric (fleece-like): Try 6001.22.00.00 (27.2% tax).
   • If it’s a Standard Knit (jersey/rib): Use 6006.32.00.80 (45% tax) but check for USTR Exclusions to reduce the 25% penalty.
   • If it’s Warp-Knitted: Use 6005.36.00.80 (45% tax).
3. Apply for Exclusions: For HS 6006 codes, actively pursue USTR exclusions to save 25%.
4. Precise Declaration: Use technical terms like "100% Polyester Knitted Fabric" instead of "Duck."

✨ Pro Tip:

"Duck" is a trade name, not a customs term. Always declare by Fiber, Structure, and Weight.
🔹 Knitted? → Chapter 60
🔹 Woven? → Chapter 54/55
🔹 Check USTR Exclusions → Save 25% on US imports!

📞 Need Help?
Contact a licensed customs broker to verify the weave structure and apply for USTR Exclusions before shipping.