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

HS v2022 Code: 730520

About 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

HS code 730520 covers a critical component in the oil and gas industry - iron or steel casing used in drilling operations. These casings play a vital role in the exploration and extraction of oil and natural gas, providing structural support and protection for the drilling process. As a key input for the energy sector, this industry holds significant economic importance, contributing to the global supply of essential fossil fuels.

Production process

The production of 730520 casing involves several specialized techniques. Steel or iron billets are first heated and then rolled or extruded into the desired circular cross-section. The casing is then cut to length and the ends may be threaded or otherwise prepared for connection. Quality control measures, such as non-destructive testing, are implemented to ensure the casing meets industry standards for strength, durability, and safety.

Production inputs

The main inputs for the 730520 industry include iron or steel raw materials, as well as specialized machinery for rolling, extruding, and finishing the casing. Additional inputs may include threading equipment, welding supplies, and various tools and equipment used in the manufacturing process. The industry also relies on a skilled workforce with expertise in metalworking and oil and gas industry requirements.

Production outputs

The primary output of the 730520 industry is the casing itself, which is then consumed by the 331120 Oil and Gas Extraction industry for use in drilling operations. These casings may also be used in other applications, such as 237120 Oil and Gas Pipeline and Related Structures Construction or 213112 Support Activities for Oil and Gas Operations. The industry's output contributes to the overall supply chain for the exploration and production of oil and natural gas.

Revisions to 730520

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 730520. The most recent 1 version of this code (730520) is in the HS v2022 system (this version):

This page shows the most recent version of code 730520.

Family tree for 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

    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/v2022/730520'>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 --> 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/v2022/730531'>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>"]

    

    %% Color coordination by level

    classDef level1 color:#000,fill:#a8f9ff,stroke:#333,stroke-width:2px
    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