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 v2017 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 components in the transportation of oil and natural gas across vast distances. As a critical infrastructure for the global energy sector, the production and trade of these pipes play a significant role in the broader economy.

Production process

The production of HS 730512 pipes typically involves a multi-step process. First, steel coils or plates are cut and formed into a cylindrical shape. The seam is then welded using a longitudinal welding technique, which creates a strong and durable joint. The pipes may undergo additional processing, such as heat treatment or coating, to enhance their corrosion resistance and durability for use in harsh pipeline environments.

Production inputs

The main inputs required for the production of HS 730512 pipes include high-quality steel, welding equipment, and specialized machinery for pipe forming and processing. Steel suppliers, fabricators, and pipeline construction companies are the primary consumers of these pipes, sourcing them for their large-scale infrastructure projects.

Production outputs

The primary output of HS 730512 is the large-diameter, longitudinally welded steel pipes used in oil and gas pipelines. These pipes are often consumed by industries such as 271000 Manufacture of coke and refined petroleum products and 351100 Production, transmission and distribution of electricity, which rely on the efficient transportation of energy resources.

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 page shows a legacy version of code 730512 ( HS v2017).

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/v2017/73'>73: Iron or steel articles</a>"]
A --> B["<a href='/classifications/hs/v2017/7305'>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/v2017/730512'>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/v2017/730511'>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/v2017/730519'>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/v2017/730520'>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/v2017/730531'>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/v2017/730539'>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/v2017/730590'>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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    classDef level2 color:#000,fill:#e0a458,stroke:#333,stroke-width:1px
    classDef level3 color:#000,fill:#419d78,stroke:#333,stroke-width:1px
    classDef level4 color:#000,fill:#c04abc,stroke:#333,stroke-width:1px
    classDef level5 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef level6 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef highlight color:#000,fill:#fff,stroke:#000,stroke-width:5px



  %% Apply classes
  class A level2
class B level4
class C level6
class D level6
class E level6
class F level6
class G level6
class H level6
class I level6

  class C highlight

  %% class A level1
  %% class B,C level2
  %% class D,E,F,G,H,I level2
  %% class J,K,L,M,N,O,P level3
  %% class C highlight