Iron or steel (excluding cast iron); tubes and pipes n.e.c. in heading no. 7305, having circular cross-sections, external diameter exceeds 406.4mm, (not seamless)

HS v2022 Code: 730590

About iron or steel (excluding cast iron); tubes and pipes n.e.c. in heading no. 7305, having circular cross-sections, external diameter exceeds 406.4mm, (not seamless)

HS code 730590 covers a critical segment of the steel industry, encompassing iron or steel tubes and pipes with circular cross-sections and an external diameter exceeding 406.4mm. These products are widely used in various industrial applications, including oil and gas pipelines, construction, and heavy machinery. Their importance in the global economy cannot be overstated, as they facilitate the transportation of essential resources and enable the development of critical infrastructure.

Production process

The production of the steel tubes and pipes covered under HS code 730590 typically involves a combination of rolling, welding, and finishing processes. The raw materials, which are primarily steel billets or slabs, are first heated and then passed through a series of rolling mills to achieve the desired diameter and wall thickness. The rolled tubes may then undergo welding, either by electric arc or submerged arc welding, to create a seamless structure. Finally, the tubes undergo various finishing processes, such as heat treatment, coating, and testing, to ensure they meet industry standards and specifications.

Production inputs

The main inputs required for the production of the steel tubes and pipes under HS code 730590 include steel billets or slabs, which serve as the raw material. Additionally, the industry relies on specialized machinery, such as rolling mills, welding equipment, and finishing tools. Energy sources, such as electricity and natural gas, are also essential for the various production stages. The availability and quality of these inputs play a crucial role in the industry's ability to meet the growing demand for large-diameter steel pipes.

Production outputs

The steel tubes and pipes produced under HS code 730590 are primarily used in the construction of oil and gas pipelines, as well as in various industrial applications, such as the manufacturing of heavy machinery and equipment. These products are often consumed by industries classified under other HS codes, such as 271011 Petroleum oils and oils obtained from bituminous minerals, other than crude; preparations n.e.c., containing by weight 70% or more of petroleum oils or of oils obtained from bituminous minerals, these being the basic constituents of the preparations; waste oils, 842199 Parts for machinery used in the manufacture of semiconductor devices or of electronic integrated circuits, and 842951 Front-end shovel loaders, among others.

Revisions to 730590

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 730590. The most recent 1 version of this code (730590) is in the HS v2022 system (this version):

This page shows the most recent version of code 730590.

Family tree for iron or steel (excluding cast iron); tubes and pipes n.e.c. in heading no. 7305, having circular cross-sections, external diameter exceeds 406.4mm, (not seamless)

    graph LR
    A["<a href='/classifications/hs/v2022/73'>73: Iron or steel articles</a>"]
A --> B["<a href='/classifications/hs/v2022/7305'>7305: Iron or steel (excluding cast iron); tubes and pipes (e.g. welded, riveted or similarly closed), having circular cross-sections, external diameter of which exceeds 406.4mm, not seamless</a>"]
B --> C["<a href='/classifications/hs/v2022/730590'>730590: Iron or steel (excluding cast iron); tubes and pipes n.e.c. in heading no. 7305, having circular cross-sections, external diameter exceeds 406.4mm, (not seamless)</a>"]

    B --> D["<a href='/classifications/hs/v2022/730511'>730511: Iron or steel (excluding cast iron); line pipe of a kind used for oil or gas pipelines (not seamless), longitudinally submerged arc welded, having circular cross-sections, external diameter exceeds 406.4mm</a>"]
B --> E["<a href='/classifications/hs/v2022/730512'>730512: Iron or steel (excluding cast iron); line pipe of a kind used for oil or gas pipelines (not seamless), longitudinally welded (not submerged arc welded), having circular cross-sections, external diameter exceeds 406.4mm</a>"]
B --> F["<a href='/classifications/hs/v2022/730519'>730519: Iron or steel (excluding cast iron); line pipe of a kind used for oil or gas pipelines (not seamless), (not longitudinally welded), having circular cross-sections, external diameter exceeds 406.4mm</a>"]
B --> G["<a href='/classifications/hs/v2022/730520'>730520: Iron or steel (excluding cast iron); casing of a kind used in drilling for oil or gas (not seamless), having circular cross-sections, external diameter exceeds 406.4mm</a>"]
B --> H["<a href='/classifications/hs/v2022/730531'>730531: Iron or steel (excluding cast iron); tubes and pipes (other than line pipe or casing of a kind used for oil or gas pipelines), longitudinally welded, having circular cross-sections, external diameter exceeds 406.4mm, (not seamless)</a>"]
B --> I["<a href='/classifications/hs/v2022/730539'>730539: Iron or steel (excluding cast iron); tubes and pipes (other than line pipe or casing of a kind used for oil or gas pipelines), welded (not longitudinally welded), having circular cross-sections, external diameter exceeds 406.4mm, (not seamless)</a>"]

    

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