Harmonized System Code Classification

HS编码前两位 "73" represents Steel Products.

This chapter mainly includes the following:

• 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, nails, bolts, nuts, etc.
• Other Steel Products: For example, springs, chains, fasteners, cutting 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 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.

HS Code: 7305

Classification Description: Other tubes and profiles (e.g., welded, riveted or similarly closed), having a circular cross-section, of iron or steel, with an external diameter exceeding 406.4 mm.

Specific Meaning: This code covers iron or steel tubes and profiles with a circular cross-section and an external diameter greater than 406.4 mm, which are closed by welding, riveting, or similar methods.

HS Code: 7305.90

Classification: Other tubes and profiles (e.g., welded, riveted or similarly closed), having a circular cross-section, of iron or steel, with an external diameter exceeding 406.4 mm: --> Other: --> Alloy steel.

Meaning: This code applies to iron or steel tubes and profiles with a circular cross-section and an external diameter greater than 406.4 mm, which are of other types (not seamless tubes) and made of alloy steel.

HS Code: 7305901000

Classification: Other tubes and pipes (e.g., welded, riveted or similarly closed), having circular cross sections, the external diameter of which exceeds 406.4 mm, of iron or steel: --> Other: --> Of iron or nonalloy steel

Explanation: This refers to other tubes and pipe-like products (e.g., welded, riveted or similarly closed tubes), with a circular cross-section and an external diameter exceeding 406.4 mm, made of iron or non-alloy steel.

Product Examples: - Large diameter steel pipes for oil and gas transportation - Structural steel profiles for construction - Heavy-duty steel tubes used in mechanical engineering - Iron or non-alloy steel pipes for industrial applications - Custom-made large steel tubes for specialized machinery