建筑用无缝钢管
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 7304901000 | 35.0% | CN | US | Official Doc |
| 7304903000 | 17.5% | CN | US | Official Doc |
| 7306901000 | 35.0% | CN | US | Official Doc |
| 7305901000 | 35.0% | CN | US | Official Doc |
| 7304905000 | 17.5% | CN | US | Official Doc |
AI Analysis
🏗️ Seamless Steel Pipes for Construction (建筑用无缝钢管)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Customs Strategy
📌 I. Product Definition & Classification: What Are "Seamless Steel Pipes for Construction"?
Seamless steel pipes for construction are hollow, cylindrical metal products manufactured without any welded seams, primarily used for structural support, scaffolding, piling, and fluid transport in building projects. In international trade, they are distinguished from welded pipes by their manufacturing process and mechanical properties.
Key Characteristics: * Material: Iron or Non-alloy Steel (Carbon Steel). * Structure: Seamless (no weld lines). * Shape: Tubular/Tube shape. * Application: Construction infrastructure, structural frameworks, oil/gas lines within buildings.
⚠️ Critical Distinction:
- If the pipe has a weld, it belongs to Chapter 73.06 (Welded Pipes).
- If it is seamless, it falls under 73.04.
- If the outer diameter exceeds 406.4 mm, it may shift to 73.05.
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
Based on the provided data, the product falls into the following HS Codes. Note that while all are "seamless steel pipes," they are distinguished by specific sub-category interpretations and associated tax liabilities.
| HS Code | Product Description | Matching Logic from Data | Applicable Scenario |
|---|---|---|---|
7304.90.10.00 |
Other seamless tubes/pipes of iron or non-alloy steel | Match Success: Name includes "Seamless" & "Steel Pipe"; Material is "Iron/Non-alloy Steel"; Shape is "Seamless". | General seamless structural pipes, typically smaller diameter. |
7304.90.30.00 |
Other seamless tubes/pipes of steel | Match Success: Material is "Steel"; Shape is "Seamless". Covers the broader "steel" category without specifying non-alloy. | Standard carbon steel seamless pipes. |
7304.90.50.00 |
Other seamless tubes/pipes of steel | Match Success: Material (Iron/Steel) and Shape (Seamless) fully match classification explanations. | General seamless steel tubes. |
7306.90.10.00 |
Other tubes/pipes of iron or non-alloy steel, welded or otherwise | Match Success: Material (Iron/Steel) and Form (Tube) align perfectly with code explanation. | Note: While 73.04 is for seamless, 73.06 is often a residual class. Data indicates a successful match here, potentially due to specific construction-grade definitions or diameter exceptions. |
7305.90.10.00 |
Other welded tubes/pipes of iron or non-alloy steel, outer diameter > 406.4mm | Match Success: Material (Iron/Steel) and Form (Tube) match. Deduced as "Other" category. | Note: Data suggests a match based on "lack of conflict" and "other" category inference, possibly for large-diameter pipes where seamless status is implied or unspecified. |
🔍 Key Reminder:
- Seamless vs. Welded: Ensure the product is genuinely seamless. If it has a longitudinal or spiral weld, it generally falls under 73.06 (Welded). However, the data provided links7306.90.10.00and7305.90.10.00to this product, suggesting complex classification rules for large-diameter or specific construction-grade pipes.
- Material Specificity: "Iron/Non-alloy Steel" vs. "Steel" affects the specific sub-heading under 7304/7305/7306.
💰 III. 2026 Latest Tariff Rate Breakdown (Including Surcharge & Policy Add-ons)
✅ Applicable Country: United States (US)
✅ Country of Origin: China (CN)
✅ Effective Date: 2025/2026 Import Cycle
🎯 1. High-Tariff Categories: 7304.90.10.00, 7306.90.10.00, 7305.90.10.00
| Item | Content |
|---|---|
| Basic Tariff | 0.0% (Ad Valorem) |
| Section 301 Surcharge | +25.0% (Additional Tariff) |
| Section 122 Tariff | +10.0% (122 Clause Tariff) |
| Total Tariff Rate | 35.0% |
| Tax Calculation | CIF Value × 35% |
| De Minimis Exemption? | ❌ Not Applicable (High tariff goods usually excluded from de minimis benefits) |
| Legal Basis Path | Section 301 + Section 122 → HS Code → Customs Valuation |
📌 Explanation:
- 25% Surcharge: Derived from USITC Footnotes under Section 301, targeting Chinese steel products.
- 10% "122 Clause" Tariff: A specific additional levy applicable to certain steel imports.
- Total 35%: This is a significant cost factor. Proper classification is crucial to avoid overpayment or penalties.
🎯 2. Low-Tariff Categories: 7304.90.30.00, 7304.90.50.00
| Item | Content |
|---|---|
| Basic Tariff | 0.0% |
| Section 301 Surcharge | +7.5% (Reduced Additional Tariff) |
| Section 122 Tariff | +10.0% (122 Clause Tariff) |
| Total Tariff Rate | 17.5% |
| Tax Calculation | CIF Value × 17.5% |
| De Minimis Exemption? | ❌ Not Applicable |
| Legal Basis Path | Section 301 (Specific Sub-list) + Section 122 → HS Code |
📌 Explanation:
- 7.5% Surcharge: Some specific sub-categories of steel pipes may fall under a different tariff rate or exclusion list within Section 301, resulting in a lower surcharge (7.5% vs 25%).
- Total 17.5%: This is significantly cheaper than the 35% bracket.
- Strategy: Verify if your specific pipe specifications (diameter, wall thickness, alloy content) allow classification under7304.90.30.00or7304.90.50.00to save 17.5% in tariffs.
🛠️ IV. Customs Clearance Operational Advice (Practical Pitfall Guide)
✅ 1. Required Documentation Checklist (Non-negotiable)
| Document | Mandatory? | Notes |
|---|---|---|
| ✅ Product Specification Sheet | ✔️ | Must specify: Outer Diameter (OD), Wall Thickness (WT), Length, Material Grade (e.g., A106, A500). |
| ✅ Manufacturing Process Statement | ✔️ | Explicitly state "Seamless Manufacturing" (e.g.,穿孔, extrusion) to distinguish from welded pipes. |
| ✅ Product Photos | ✔️ | Clear shots of the pipe end (to show no weld) and any markings/stenciling. |
| ✅ Commercial Invoice | ✔️ | Value must reflect CIF. Must not say "Construction Material" vaguely; use "Seamless Steel Pipe". |
| ✅ Packing List | ✔️ | Weight and dimensions per bundle/pallet. |
| ✅ Country of Origin Certificate | ✔️ | To prove Chinese origin (triggers tariffs). |
✅ 2. Classification Strategy (Crucial Tip)
🔥 "Seamless vs. Welded: One Word, 35% Difference!"
| Scenario | Recommended HS Code | Reason |
|---|---|---|
| Standard Seamless Pipe (Small/Medium OD) | 7304.90.10.00 or 7304.90.50.00 |
Matches "Iron/Non-alloy Steel" + "Seamless". |
| Specific Steel Sub-category (Lower Surcharge) | 7304.90.30.00 |
If the pipe fits the specific "steel" definition that qualifies for the 7.5% rate. Check with a broker! |
| Large Diameter / Complex Definition | 7306.90.10.00 |
If OD or other factors push it out of 7304. Data shows a match here. |
| Very Large Diameter (>406.4mm) | 7305.90.10.00 |
If OD > 406.4mm, it moves to Chapter 73.05. Data shows a match. |
⚠️ Warning:
- Do NOT misclassify a welded pipe as seamless to avoid tariffs. US Customs and Border Protection (CBP) conducts rigorous physical inspections.
- If you claim7304.90.30.00(17.5%), ensure the product strictly meets the sub-heading criteria. Misclassification leads to penalties and back-taxes.
✅ 3. Special Circumstances Handling
| Situation | Advice |
|---|---|
| Pipes for Oil & Gas vs. Structural | Ensure the description matches the actual use. "Construction" implies structural. If used for fluid transport, clarify if it changes classification. |
| Coated Pipes | If galvanized or coated, the base HS Code remains the same, but declare the coating material. |
| Pre-assembled Scaffolding | If sold as a kit, it might be classified as scaffolding (7326.90.85.00). Check if the pipes are pre-assembled. |
🌍 V. Global Market Comparison (2026 Context)
| Country/Region | Recommended HS Code | Est. Tariff (China Origin) | Notes |
|---|---|---|---|
| 🇺🇸 USA | 7304.90.10.00 / 7304.90.30.00 |
17.5% - 35.0% | High Barriers. Section 301 + 122 Clause apply. |
| 🇨🇳 China | 7304.90.10.00 |
~0% - 5% | Import duty may be low, but VAT applies (13%). |
| 🇪🇺 EU | 7304.90.10.00 |
~0% - 2% | Countervailing Duties may apply due to steel overcapacity. Check anti-dumping rules. |
| 🇦🇺 Australia | 7304.90.10.00 |
~5% | Standard MFN rate. |
📌 Conclusion:
- The USA is the most challenging market for Chinese seamless steel pipes due to the 35% total tariff (or 17.5% for specific sub-categories).
- Cost Optimization: Try to qualify for the 17.5% rate (7304.90.30.00/7304.90.50.00) by verifying material specifications and sub-heading definitions.
📌 VI. Common Errors & Pitfalls (Lessons Learned)
❌ Error 1: Calling it "Steel Tube" without specifying "Seamless".
👉 Result: CBP may investigate. If they find it's seamless, they classify it under 7304 (35%). If they find it's welded, it's 7306 (still high tariffs). Transparency is key.
❌ Error 2: Misdeclaring as "Stainless Steel" to avoid tariffs.
👉 Result: Stainless steel falls under 7304.10 or 7304.21. Different tariff rates and anti-dumping duties apply. If it's carbon steel, this is fraud.
❌ Error 3: Ignoring the "122 Clause".
👉 Result: Even if the basic tariff is 0%, forgetting the 10% 122 Clause leads to underpayment and penalties.
✅ Correct Declaration Example:
"Seamless Carbon Steel Pipes, ASTM A500 Grade B, OD 4 inches, WT 0.25 inch, For Structural Construction, Made in China."
🎯 VII. Conclusion: Precise Classification Saves Money!
🎯 Remember:
🔹 "Seamless vs. Welded: 35% or 17.5%?"
🔹 "Check the Sub-Heading: 7304.90.30.00 might save you 17.5%!"
🔹 "Declare Materials Clearly: Carbon Steel vs. Stainless Steel."
📌 Pro Tip:
If you are importing large quantities, consider applying for a US Customs and Border Protection (CBP) Binding Ruling before shipment. This provides legal certainty on the HS Code and tariff rate, protecting you from unexpected audits.
📣 Immediate Action:
📞 Consult a Customs Broker: Verify if your pipes qualify for the 17.5% rate (
7304.90.30.00/7304.90.50.00).
🚀 Accurate Documentation: Ensure your invoices and specs explicitly state "Seamless" and material grade.
💼 Cost Calculation: Factor in the 35% or 17.5% tariff into your landed cost model.
✨ Professional Customs Clearance Starts with Precise Classification!
💼 Every Percentage Point 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.