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 of steel. These products usually 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 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 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: 7306

Classification Description: Other tubes, pipe and hollow profiles (e.g., split or welded, riveted or similarly closed), of iron or steel.

Six-digit explanation: HS Code: 7306.40

Classification: Other tubes, pipe and hollow profiles (e.g., split or welded, riveted or similarly closed), of iron or steel: --> Other, welded, circular cross-section, stainless steel: --> Wall thickness of 1.65 millimeters or greater --> Other: --> Other: --> Outer diameter exceeding 114.3 millimeters but not exceeding 406.4 millimeters --> Other

Meaning: Refers to tubes, pipe and hollow profiles of iron or steel, welded, circular cross-section, stainless steel, with a wall thickness of 1.65 millimeters or greater, outer diameter exceeding 114.3 millimeters but not exceeding 406.4 millimeters, and other tubes.

8-10 digit explanation: HS Code: 7306401015 Classification: Other tubes, pipe and hollow profiles (e.g., split or welded, riveted or similarly closed), of iron or steel: --> Other, welded, circular cross-section, stainless steel: --> Wall thickness less than 1.65 millimeters --> Nickel content exceeds 0.5% (by weight) --> Other Explanation: This HS code belongs to stainless steel welded circular cross-section tubes, with a wall thickness less than 1.65 millimeters, nickel content exceeding 0.5%, and not meeting other specific molybdenum content requirements (molybdenum content not exceeding 1.5% or less than 5%).

Product Examples: * Stainless steel welded tubes used in heat exchangers * Stainless steel circular tubes for construction * Stainless steel circular tubes used in chemical equipment * Stainless steel circular tubes used in mechanical engineering * Stainless steel circular tubes used in the food industry