Harmonized System Code Classification

The first two digits of the HS code "73" represent iron and steel articles.

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 iron and 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 iron and steel. These products usually have the following characteristics:

• Main material is iron or steel: The core component of the product is iron or steel.
• Wide range of applications: Iron and steel products are widely used in construction, machinery, transportation, energy, and other industries.
• Different manufacturing processes and product forms: Iron and steel products can be manufactured through casting, forging, rolling, welding, and other processes, and they can present 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 iron or 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: 7315

Classification description: Chains and parts of chains, of iron or steel.

Other information:

• General rate: Not provided
• Special rate: Not provided
• Rate 2: Not provided
• Quota quantity: Not provided
• Additional duty: Not provided
• Unit of measurement: Not provided

Six-digit explanation: HS Code: 7315.82

Classification: Chains and parts of chains, of iron or steel

Specific meaning:

• Other chains
  • Other
    • Welded chains
      • Of iron or non-alloy steel
        • Diameter greater than 10 mm

8-10 digit explanation: HS Code: 7315825000

Classification: Chains and parts of chains, of iron or steel: Other chains: Other, welded chains: Of iron or non-alloy steel: Diameter not exceeding 10 mm

Explanation: This HS code belongs to chains and parts of chains made of iron or steel, and is further classified as other chains, specifically welded chains made of iron or non-alloy steel with a diameter not exceeding 10 mm.

Product examples: * Welded steel chains for industrial use * Steel chains for conveyor systems * Iron chains for lifting equipment * Non-alloy steel chains for agricultural machinery * Steel chains for bicycle or motorcycle use