Iron or non-alloy steel; U sections, hot-rolled, hot-drawn or extruded, of a height of 80mm or more

HS v2017 Code: 721631

About iron or non-alloy steel; u sections, hot-rolled, hot-drawn or extruded, of a height of 80mm or more

HS code 721631 covers the classification of iron or non-alloy steel U-sections that are hot-rolled, hot-drawn, or extruded, with a height of 80mm or more. This industry plays a crucial role in the construction and manufacturing sectors, providing essential structural components for a wide range of applications, from buildings and bridges to machinery and transportation equipment. The demand for these steel products is closely tied to the overall health of the global economy and the pace of infrastructure development.

Production process

The production of iron or non-alloy steel U-sections under HS code 721631 typically involves a multi-step process. First, raw materials such as iron ore, coal, and scrap steel are melted in a furnace to produce molten steel. The molten steel is then cast into semi-finished products, such as billets or blooms. These semi-finished products are then reheated and passed through a series of rolling mills, where they are shaped into the desired U-section profile. The hot-rolling process can be followed by additional heat treatment or finishing steps, depending on the specific requirements of the end-use application.

Production inputs

The main inputs required for the production of iron or non-alloy steel U-sections under HS code 721631 include iron ore, coal, scrap steel, and various alloying elements such as manganese, silicon, and chromium. Additionally, the industry relies on specialized machinery and equipment, such as furnaces, rolling mills, and finishing lines, to transform the raw materials into the final product. Energy, in the form of electricity or natural gas, is another critical input for the production process.

Production outputs

The primary output of the industry covered by HS code 721631 is hot-rolled, hot-drawn, or extruded U-sections made of iron or non-alloy steel, with a height of 80mm or more. These structural steel components are widely used in the construction of buildings, bridges, and other infrastructure projects, as well as in the manufacturing of machinery, vehicles, and various industrial equipment. The output of this industry may also be consumed by other related HS codes, such as 730120 Structures and parts of structures; iron or steel, towers and lattice masts and 730110 Structures and parts of structures; iron or steel, bridges and bridge-sections.

Revisions to 721631

Classification codes are adjusted frequently. The code may have been revised or replaced between system versions. The table below shows the history (newest to oldest) of the code 721631. The most recent 1 version of this code (721631) is in the HS v2022 system:

This page shows a legacy version of code 721631 ( HS v2017).

Older versions

Family tree for iron or non-alloy steel; u sections, hot-rolled, hot-drawn or extruded, of a height of 80mm or more

    graph LR
    A["<a href='/classifications/hs/v2017/72'>72: Iron and steel</a>"]
A --> B["<a href='/classifications/hs/v2017/7216'>7216: Iron or non-alloy steel, angles, shapes and sections</a>"]
B --> C["<a href='/classifications/hs/v2017/721631'>721631: Iron or non-alloy steel; U sections, hot-rolled, hot-drawn or extruded, of a height of 80mm or more</a>"]

    B --> D["<a href='/classifications/hs/v2017/721610'>721610: Iron or non-alloy steel; U, I or H sections, hot-rolled, hot-drawn or extruded, of a height of less than 80mm</a>"]
B --> E["<a href='/classifications/hs/v2017/721621'>721621: Iron or non-alloy steel; L sections, hot-rolled, hot-drawn or extruded, of a height of less than 80mm</a>"]
B --> F["<a href='/classifications/hs/v2017/721622'>721622: Iron or non-alloy steel; T sections, hot-rolled, hot-drawn or extruded, of a height less than 80mm</a>"]
B --> G["<a href='/classifications/hs/v2017/721632'>721632: Iron or non-alloy steel; I sections, hot-rolled, hot-drawn or extruded, of a height of 80mm or more</a>"]
B --> H["<a href='/classifications/hs/v2017/721633'>721633: Iron or non-alloy steel; H sections, hot-rolled, hot-drawn or extruded, of a height of 80mm or more</a>"]
B --> I["<a href='/classifications/hs/v2017/721640'>721640: Iron or non-alloy steel; L or T sections, hot-rolled, hot-drawn or extruded, of a height of 80mm or more</a>"]
B --> J["<a href='/classifications/hs/v2017/721650'>721650: Iron or non-alloy steel; angles, shapes and sections, n.e.c. in heading no. 7216, hot-rolled, hot-drawn or extruded</a>"]
B --> K["<a href='/classifications/hs/v2017/721661'>721661: Iron or non-alloy steel; angles, shapes and sections, cold-formed or cold-finished, obtained from flat-rolled products</a>"]
B --> L["<a href='/classifications/hs/v2017/721669'>721669: Iron or non-alloy steel; angles, shapes and sections, cold-formed or cold-finished, (not obtained from flat-rolled products)</a>"]
B --> M["<a href='/classifications/hs/v2017/721691'>721691: Iron or non-alloy steel; angles, shapes and sections, n.e.c. in heading no. 7216, cold-formed or cold-finished, from flat-rolled products</a>"]
B --> N["<a href='/classifications/hs/v2017/721699'>721699: Iron or non-alloy steel; angles, shapes and sections, n.e.c. in heading no. 7216</a>"]

    

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