Casings

📦 Metal Casings (Metal Enclosures & Shells)

🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Customs Strategy
📌 I. Product Definition & Classification: What Exactly Are "Metal Casings"?

In international trade, "Metal Casings" are broad structural components used in construction, industrial machinery, or electronics. They are not unified under a single HS code but are classified based on Material (Aluminum vs. Steel/Iron) and Specific Application (Structural Parts vs. General Parts).

⚠️ Key Distinction:
- If the casing is made of Aluminum and used as a structural part in buildings → Chapter 76
- If the casing is made of Iron/Steel and used as a general part → Chapter 73
- If the casing is made of Other Base Metals (non-ferrous) → Chapter 83

📊 II. HS Code Classification Details (2026 Latest Tariff Authority)

🔍 Important Note:
- Aluminum Casings generally fall under 7610 if used as structural parts in construction.
- Steel/Iron Casings fall under 7326 as "Other articles of base metal."
- Other Base Metal Casings fall under 8304 as "Cases, boxes..."

💰 III. 2026 Latest Tariff Rate Breakdown (US Import from China)

✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Date: Current (Includes Section 301 & Section 232 tariffs)

🎯 1. 7610.90.00.80 – Aluminum Casing (Structural)

📌 Explanation:
- Aluminum products imported from China are subject to Section 232 (National Security) tariffs of 50%.
- Additionally, Section 301 adds 25%.
- Base rate is 5.7%.
- Total burden: 90.7%. This is a VERY HIGH tariff, requiring strict cost control.

🎯 2. 7610.90.00.40 – Aluminum Casing (Construction/Decoration)

📌 Note:
- Same as above. Whether classified as "Structural" or "Construction/Decoration," Aluminum casings face the same 90.7% total tariff due to Section 232.

🎯 3. 8304.00.00.00 – Base Metal Casing (Other)

📌 Note:
- This category applies to non-ferrous base metals (not Aluminum, not Steel/Iron).
- Significantly lower tariff (13.9%) compared to Aluminum (90.7%) and Steel (85-87%).
- Section 232 applies at 10% for "Other" base metals, unlike 50% for Aluminum/Steel.

🎯 4. 7326.90.10.00 – Iron/Steel Casing (Parts)

📌 Explanation:
- Steel products are subject to Section 232 (50%) and Section 301 (25%).
- Base rate is often 0% for certain steel parts, but the 50%+25% surcharges make it 85%.
- High tariff, similar to Aluminum.

🎯 5. 7326.90.86.88 – High-Strength Steel Casing (Other)

📌 Note:
- Same logic as above. The base rate is slightly higher (2.9%), leading to a 87.9% total tariff.
- Critical: Almost all steel/aluminum casings from China face >85% tariffs.

🛠️ IV. Customs Clearance Practical Advice

✅ 1. Material Declaration is Critical

🔥 "Material Determines Destiny":
- Misdeclaring Aluminum as "Other Base Metal" to get 13.9% tariff is Fraud.
- However, if the casing is truly made of a different base metal (e.g., Zinc, Brass, Bronze), accurately declaring it under 8304 can save ~77% in tariffs.

✅ 2. Specific Product Description Guidelines

Correct Declaration Example:

"Aluminum Alloy Casing, Model XYZ, Used as Structural Support in Building Facade, HS Code 7610.90.00.80"

Wrong Declaration Example:

"Metal Box" (Too vague, may trigger manual examination)

✅ 3. Documentation Required

🚫 V. Common Pitfalls & Warnings

❌ Pitfall 1: Misclassifying Aluminum as Steel
👉 Consequence: If declared as Steel but is Aluminum, it's still 90.7%, but if caught, it's fraud. If declared as Steel and it's Steel, 85%. No savings, just risk.

❌ Pitfall 2: Ignoring Section 232
👉 Consequence: Many importers forget that Aluminum and Steel have a 50% Section 232 tariff on top of Section 301. Total cost >85%.

❌ Pitfall 3: Assuming "Other Base Metal" is Always 13.9%
👉 Consequence: Only applies if the material is NOT Aluminum and NOT Steel. Brass, Bronze, Zinc, etc., fall under 8304. Verify material composition!

🎯 VI. Strategic Recommendations

1. Material Substitution:

   • If the casing's function allows, consider using Non-Ferrous Base Metals (e.g., Brass, Zinc, Bronze) declared under 8304.00.00.00 for a 13.9% tariff instead of 90.7%.

2. Origin Diversification:

   • For Aluminum/Steel casings, consider sourcing from or assembling in Vietnam, Mexico, or Thailand to potentially avoid US Section 232/301 tariffs (subject to ongoing trade rules).

3. Pre-Ruling Application:

   • Apply for an Advance Ruling with US Customs (CBP) to confirm the correct HS Code and tax rate before shipment. This reduces the risk of post-clearance audits and penalties.

📌 Summary Table

📣 Final Advice:

"For Metal Casings, check the material first. If it's Steel or Aluminum, expect >85% tax. If it's another metal, aim for 13.9%. Never guess – declare accurately!"

✨ Professional Customs, Precise Classification.
💼 Your Bottom Line Depends on It.