Chapter 72 covers the entire steel industry chain products, including pig iron, ferroalloys, scrap, ingots and other primary forms, semi-finished products (such as billets, slabs), as well as hot-rolled or cold-rolled flat products, bars, angles, sections, etc. However, further processed steel products (such as pipe fittings, structural parts) are classified under Chapter 73. This chapter is the core chapter for steel trade, involving a large number of trade measures such as anti-dumping and tariff quotas. Heading 7216 covers angles, shapes and sections of iron or non-alloy steel, but excludes hollow drill steel (classified under 7228) and further processed products. Specifically includes H-beams, I-beams, U-beams, Z-beams, T-beams, L-beams, etc., whether or not hot-rolled, hot-drawn, extruded or further processed (such as bending, drilling). However, if cold-formed or welded, they may be classified under other headings. First 2 digits 72: indicates Chapter 72, i.e., iron and steel. Digits 3-4, 16: indicates heading 7216, i.e., angles, shapes and sections of iron or non-alloy steel. Digits 5-6, 40: indicates subheading 721640, specifically hot-rolled, hot-drawn or extruded Z-beams with a height of ≥80mm. Note: The height of Z-beams is measured as the section height, and must be hot-processed (hot-rolled, hot-drawn, extruded); if cold-formed, they are classified under other subheadings of 7216 or 7217. This commodity is a hot-rolled Z-beam with a Z-shaped cross-section and a height of ≥80mm, conforming to the description of subheading 721640 under heading 7216. If the height is <80mm, it is classified under 721699; if cold-formed, it is classified under other subheadings of 7216 or 7217 (articles of iron wire or non-alloy steel wire). If it is alloy steel, it is classified under 7228. Therefore, correct classification requires confirmation of material, processing method and section height.

Product Name: The standard name of the declared commodity, which should use the customs standardized declaration name, such as "hot-rolled Z-beam". Material: Indicate the steel type, such as non-alloy steel, alloy steel, and specify the specific grade (such as Q235B). Processing Method: State whether it is hot-rolled, hot-drawn or extruded, and whether it is further processed (such as drilling, bending). Cross-section Shape: Describe the cross-section as Z-shaped, and specify dimensions such as height, width, thickness. Section Height: Declare the section height of the Z-beam in millimeters, used to determine the subheading. Grade: Such as Q235B, SS400, etc., used to confirm material and performance. Length: Declare fixed length or random length, in millimeters. Use: Briefly describe the use, such as building structures, bridges, vehicle manufacturing, etc. Product Name: Hot-rolled Z-beam; Material: Non-alloy steel, grade Q235B; Processing Method: Hot-rolled, not further processed; Cross-section Shape: Z-shaped; Section Height: 120mm; Width: 50mm; Thickness: 4mm; Length: 6000mm; Use: Building steel structure. Failing to declare section height, making it impossible to determine subheading 721640 or 721699. Misreporting cold-formed Z-beams as hot-rolled, which should be classified under other subheadings of 7216 or 7217. Declaring material as alloy steel, but actually non-alloy steel, leading to incorrect heading.

The core basis for classification is: 1) Material: must be non-alloy steel; if alloy steel, classified under 7228; 2) Processing Method: must be hot-rolled, hot-drawn or extruded; if cold-formed, classified under other subheadings of 7216 or 7217; 3) Cross-section Shape: must be Z-shaped; 4) Section Height: must be ≥80mm. It is also necessary to confirm whether further processing (such as drilling, bending) has been carried out; if so, it may be classified under Chapter 73. 721699 Other angles, shapes and sections of non-alloy steel: This code covers other sections not elsewhere specified, including Z-beams with height <80mm or other shapes. If the Z-beam height is <80mm, it is classified under this code. 721610 Hot-rolled U, I or H beams, height <80mm: This code specifically refers to U, I, H beams, excluding Z-beams. Z-beams, even with height <80mm, are not classified under this code. 7217 Iron wire or non-alloy steel wire: This heading covers cold-formed or further processed wire products, such as cold-formed Z-beams. If the Z-beam is cold-formed, it is classified under 7217. 7228 Angles, shapes and sections of other alloy steel: If the Z-beam is made of alloy steel, it is classified under 7228, not 7216. 7308 Structures and parts of structures of iron or steel: If the Z-beam is further processed (such as drilling, cutting, welding) into structural parts, it is classified under 7308. Is the material non-alloy steel? Is the processing method hot-rolled, hot-drawn or extruded? Is the cross-section shape Z-shaped? Is the section height ≥80mm? Has it been further processed (such as drilling, bending)?

How to query the HS code for hot-rolled Z-beams? First confirm the material is non-alloy steel, processing method is hot-rolled, cross-section is Z-shaped, and height ≥80mm, then classify under 721640. If height <80mm, classify under 721699; if alloy steel, classify under 7228; if cold-formed, classify under 7217. It is recommended to use the customs tariff or query platform, enter the keyword "Z-beam" to filter. What is the difference in HS codes between hot-rolled Z-beams and cold-formed Z-beams? Hot-rolled Z-beams are classified under 721640 (height ≥80mm) or 721699 (height <80mm), while cold-formed Z-beams are classified under 7217 (articles of iron wire or non-alloy steel wire). The main difference lies in the processing method: hot-rolling is hot processing, cold-forming is cold processing. How is the section height of a Z-beam measured? Section height refers to the vertical distance between the upper and lower flanges of the Z-beam, usually the total section height. When measuring, it is necessary to measure from the outer surface of one flange to the outer surface of the other flange, in millimeters. It must be accurately provided during declaration to determine the subheading. If the Z-beam is drilled, will the HS code change? If drilling or other further processing changes the basic characteristics of the Z-beam, making it a specific structural part, it may be classified under 7308. However, if it is only simple drilling for transportation convenience, it may still be classified under 7216. Judgment should be based on the degree of processing and use. Which HS code are alloy steel Z-beams classified under? Alloy steel Z-beams are classified under 7228, with the specific subheading depending on the processing method and section height. For example, hot-rolled alloy steel Z-beams with height ≥80mm are classified under 722840. Note the definition of alloy steel, such as containing a certain amount of alloying elements. What are the common errors when declaring hot-rolled Z-beams? Common errors include: failing to declare section height, misreporting cold-formed as hot-rolled, incorrect material declaration (alloy steel reported as non-alloy steel), failing to provide grade, etc. These errors may lead to classification errors, tariff differences or customs penalties. How to query the tariff rate for hot-rolled Z-beams? Tariff rates are subject to change and are affected by trade agreements, anti-dumping, etc. It is recommended to query the "Import and Export Tariff of the People's Republic of China" issued by the General Administration of Customs of China or use the customs classification query system, enter HS code 721640 to obtain the latest tariff rate. Also pay attention to free trade agreement rates. Are the HS codes for Z-beams and U-beams the same? No. U-beams are classified under 721610 (height <80mm) or 721631 (height ≥80mm), while Z-beams are classified under 721640 (height ≥80mm) or 721699 (height <80mm). The cross-section shapes are different, and the subheadings are different.