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
HS v2022 Code: 730512
About 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
HS code 730512 covers a specific type of steel pipe used in the oil and gas pipeline industry. These large-diameter, longitudinally welded pipes are essential infrastructure for the transportation of crude oil, natural gas, and other energy resources across vast distances. As a critical component of the global energy supply chain, this industry plays a vital role in supporting economic development and meeting the world's growing energy demands.
Production process
The production of HS 730512 pipes involves a multi-step process. First, steel coils or plates are cut and formed into cylindrical shapes. These sections are then longitudinally welded using specialized welding techniques, such as electric resistance welding or submerged arc welding. The welded pipes undergo further processing, including heat treatment, surface finishing, and quality control inspections to ensure they meet industry standards and specifications.
Production inputs
The main inputs required for the production of HS 730512 pipes include high-quality steel, welding consumables, and specialized machinery. Steel mills provide the raw material, which is typically in the form of coils or plates. Welding electrodes, fluxes, and shielding gases are also essential inputs. Additionally, the industry relies on advanced pipe-forming and welding equipment, as well as testing and inspection tools to ensure the integrity and safety of the final products.
Production outputs
The primary output of HS 730512 is large-diameter, longitudinally welded steel pipes used in oil and gas pipeline infrastructure. These pipes are often consumed by industries classified under 460000 Wholesale trade, except of motor vehicles and motorcycles and 422000 Construction of utility projects, which are responsible for the construction, maintenance, and expansion of energy transportation networks. The pipes may also be used in other industrial applications, such as 281100 Manufacture of engines and turbines, except aircraft, vehicle and cycle engines.
Revisions to 730512
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 730512. The most recent 1 version of this code (730512) is in the HS v2022 system (this version):
This page shows the most recent version of code 730512.
Family tree for 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
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/v2022/730512'>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 --> 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/v2022/730519'>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 --> F["<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 --> G["<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 --> H["<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>"]
B --> I["<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>"]
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