Harmonized System Code Classification

The first two digits of the HS code "73" represent steel products.

Specifically, this chapter includes the following main contents:

• Steel structural components: For example, bridges, buildings, towers, etc.
• Cast iron products: For example, pipes, pipe fittings, radiators, etc.
• Steel products: For example, steel plates, steel pipes, steel wires, steel nails, bolts, nuts, etc.
• Other steel products: For example, springs, chains, fasteners, tools, etc.

Reason for classification:

The establishment of the "73" chapter is to classify and manage various products made primarily of steel. These products typically have the following characteristics:

• Main material is steel: The core component of the product is steel.
• Wide range of applications: Steel products are widely used in construction, machinery, transportation, energy, and other industries.
• Different manufacturing processes and product forms: Steel products can be manufactured through casting, forging, rolling, welding, and other processes, and they can take various forms and functions.

Therefore, the first two digits of the HS code "73" are used to identify and classify all products made primarily of steel.

If you can provide a more specific HS code (e.g., 7304, 7310, etc.), I can provide a more detailed classification explanation.

First four digits explanation: HS code: 7304

Classification description: Seamless tubes, pipes, and hollow profiles of iron (excluding cast iron) or steel.

Six-digit explanation: HS code: 7304.90

Classification: Seamless tubes, pipes, and hollow profiles of iron (excluding cast iron) or steel: --> Other: --> Wall thickness less than 4 mm: --> Alloy steel

Meaning: This HS code applies to seamless tubes, pipes, and hollow profiles made of alloy steel with a wall thickness less than 4 mm.

8-10 digit explanation: HS code: 7304907000

Classification: Seamless iron tubes or steel tubes, alloy steel tubes with wall thickness less than 4 mm

Explanation: This HS code is classified as seamless iron tubes or steel tubes, belonging to other alloy steel tubes, and the tube wall thickness is less than 4 mm.

Examples of products: - Alloy steel seamless tubes with wall thickness less than 4 mm - Seamless steel pipes for industrial use - Hollow profiles made of alloy steel - Steel tubes for automotive applications - High-strength alloy steel pipes for pressure systems