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:

• Iron and steel structural parts: 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 typically 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.
• Diverse manufacturing processes and product forms: Iron and steel products can be manufactured through casting, forging, rolling, welding, and other processes, and 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 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.

Explanation of the first four digits: 7302 represents railway or tramway track laying materials made of iron or steel, including:

• Rails, guides, and rack rails
• Switch blades, crossover switches, point rods, and other crossover switch components
• Sleepers (track base beams)
• Fish plates
• Rail seats, rail seat wedges, base plates
• Rail clamps, sleeper bases
• Connection components and other materials specifically used to connect or fix rails.

Explanation of the six digits: Classification: Railway or tramway track laying materials made of iron or steel, including rails, guides, switch blades, crossover switches, switch rods, and other switch components, sleepers (track ties), fish plates, rail seats, rail wedges, base plates, rail clamps, base plates, sleepers, and other materials specifically used to connect or fix rails.

Specific meaning: Refers to iron or steel materials used for railway or tramway track laying, including rails, guides, switch blades, and other components, as well as various specialized materials used to connect and fix these components.

Explanation of the 8-10 digits: HS code: 7302101010 Classification: Railway or tramway track laying materials, including rails, check rails, track rails, switches, crossover frogs, point rods, and other crossover parts, sleepers (track base), fish plates, supports, support wedges, base plates (base plates), rail clamps, base plates, sleepers, and other materials specifically used to connect or fix rails --> rails --> iron or non-alloy steel --> new --> unheat-treated --> standard T-type rails weighing more than 30 kilograms per meter Explanation: This HS code corresponds to railway or tramway track laying materials, specifically rails made of iron or non-alloy steel, new rails that have not been heat-treated, and are standard T-type rails weighing more than 30 kilograms per meter.

Product examples: - Standard T-type steel rails for railway tracks - Non-alloy steel rails for high-speed rail - New steel rails used in tramway systems - Unheat-treated steel rails for heavy-duty rail applications - 30 kg/m standard T-type rail for mainline railway tracks