HS Code for Cast iron pipes

Cast iron pipes are classified under HS code 730300 because they are tubes, pipes, and hollow profiles made specifically from cast iron. This classification is determined by the material composition, where the iron contains a carbon content typically exceeding 2% by weight, distinguishing it from steel. The manufacturing process involves casting techniques, such as centrifugal casting, rather than rolling or welding. Under the Harmonized System, Chapter 73 covers articles of iron or steel, and 7303 is the specific heading for cast iron products of a tubular nature. This includes both grey cast iron and ductile (nodular) cast iron pipes. The classification remains the same regardless of whether the pipes are used for sewage, water distribution, or industrial fluid transport, provided they meet the metallurgical definition of cast iron and are not further worked into specific machinery parts.

Products Included

• Grey cast iron pipes for soil and waste drainage
• Ductile iron pipes for pressurized water mains
• Cast iron flanged pipes for industrial piping systems
• Hollow profiles made of cast iron for structural use
• Spigot and socket cast iron pipes

Common Misclassification

Cast iron pipes are frequently confused with steel pipes classified under headings 7304 (seamless) or 7305 and 7306 (welded). The primary distinction is the carbon content and the manufacturing method; steel has lower carbon and is usually wrought. Additionally, pipe fittings made of cast iron are classified under 7307 rather than 7303. If the pipe is part of a specific machine, such as an engine block component, it might be classified under Section XVI (machinery) rather than Chapter 73.

FAQ

What is the HS code for cast iron pipes?

The primary HS code for cast iron pipes, tubes, and hollow profiles is 730300.

Does this code include ductile iron pipes?

Yes, ductile iron (also known as nodular iron) is considered a form of cast iron for customs purposes and is classified under 730300.