What HS code should I use for ductile iron pipes?

Question – What HS code should I use for ductile iron pipes?
Answer – Typically, you classify ductile iron pipes under HS 7303.0010 or HS 7303.0090 (cast iron pipes), while fittings fall under HS 7307.19xx.

Let’s unpack that in detail, explain the differences, and include frequently asked questions to clarify common points.

🎯 HS Codes: Cast Iron Pipes vs Fittings

• HS 7303.00 – Includes ductile cast iron pipes and tubes used in pressure systems:

  • More specifically:

    • 7303.0010.10: Ductile cast iron pipes with internal/external coating

    • 7303.0010.20: Bare ductile cast iron pipes.

• HS 7307.19xx – Reserved for cast iron or steel pipe fittings, such as couplings, elbows, sleeves:

  • 7307.19.3000: General cast ductile fittings.

  • 7307.19.3070: Specific to fittings with mechanical push-on or flanged joints.

Quick table:

Why Different Codes?

HS codes are structured for clarity:

• 7303 covers complete pipes (tubes or hollow cylinders).

• 7307 covers pipe parts (fittings such as couplings, adapters).
  Correct classification ensures accurate duty rates and customs compliance.

🌍 Example: International Import Data

• Imports labelled under 7303.0010 or 0090 show routine classification of coated and bare ductile iron pipes.

• 7307.19.3000 is often used by major vendors like Sigma Corp and McWane Inc for fittings.

✅ FAQ Section

Q1: Can fittings share the pipe code HS 7303?
No. Pipes and fittings fall under different HS chapters. Fittings go under HS 7307, not 7303.

Q2: What about seamless or welded iron pipes?
Those are classified under HS 7304–7306, not applicable to ductile iron_PIPE products .

Q3: Does coating affect the HS code?
Yes. Within chapter 7303, the fourth pair of digits distinguishes coated vs bare pipes—e.g., 0010 vs 0020 for coated vs bare.

Q4: If a ductile pipe is lined, what code applies?
It still falls under HS 7303.0010.10 if it has internal/external coating.

Q5: Are there global variations?
HS codes use a 6-digit standard globally, but beyond that, different countries may extend codes—e.g., EU’s TARIC adds two extra digits. The EU uses 7303001010 in TARIC to indicate coated ductile pipes.

✅ Final Overview

• HS 7303.0010 – Coated ductile cast iron pipe.

• HS 7303.0020 – Bare ductile cast iron pipe.

• HS 7307.19.3000 / 7307.19.3070 – Ductile iron/steel fittings.

Using the correct HS code is vital. It influences tariffs, compliance, and international trade flows. Always cross‑check with your local customs authority or a trusted tariff lookup tool for exact national extensions.

References:

• HS 7303.0010 – Ductile cast iron pipes (coated/bare)
• HS 7303.0090 – Other ductile cast iron pipes
• HS 7307.19.3000 – Cast ductile iron or steel fittings
• HS 7307.19.3070 – Mechanical push-on or flanged ductile iron fittings
• USITC Harmonized Tariff Schedule – Chapter 73 (Iron & Steel Articles)