HS Code for Cast iron tubes

Cast iron tubes, pipes, and hollow profiles are classified under HS code 7303.00. This is a specific heading within Chapter 73 that covers all piping products made of cast iron, regardless of their intended use. Unlike steel pipes, which are classified in headings 7304 through 7306 based on whether they are seamless or welded, cast iron tubes are grouped together because the casting process itself defines the product's structural nature. Cast iron is preferred in many industrial and municipal applications, such as sewage and water mains, due to its high carbon content which offers superior corrosion resistance and dampening properties. The classification applies to the tubes themselves; once they are modified into specific shapes like elbows or tees, they may move to other headings, but the straight hollow profiles remain strictly under 7303.00.

Products Included

• Cast iron soil pipes
• Ductile iron water pipes
• Cast iron drain pipes
• Hollow profiles made of cast iron
• Centrifugally cast iron tubes

Common Misclassification

Cast iron tubes are often confused with tube or pipe fittings of cast iron, which fall under HS code 7307.11. Fittings include items like elbows, sleeves, and flanges. Another common misclassification is under 7304.11 or 7305.11, which are codes for steel pipes used for oil and gas pipelines. It is vital to distinguish between cast iron and steel, as steel pipes are subject to different technical standards and trade tariffs.

FAQ

What is the HS code for cast iron tubes?

The HS code for tubes, pipes, and hollow profiles made of cast iron is 7303.00.

Does this include ductile iron pipes?

Yes, ductile iron is a type of cast iron (spheroidal graphite iron), and pipes made from it are classified under HS code 7303.00.