Iron or non-alloy steel (excluding cast iron); tubes and pipes (not seamless), welded, of circular cross-section, n.e.c. in chapter 73

HS v2022 Code: 730630

About iron or non-alloy steel (excluding cast iron); tubes and pipes (not seamless), welded, of circular cross-section, n.e.c. in chapter 73

HS code 730630 covers a crucial segment of the steel industry, encompassing the production of iron or non-alloy steel tubes and pipes that are welded and have a circular cross-section. These products find widespread application across various industries, serving as essential components in construction, manufacturing, and infrastructure development. Their versatility and durability make them indispensable in the global economy.

Production process

The production of 730630 steel tubes and pipes typically involves a multi-step welding process. First, coiled steel sheets or strips are cut to the desired length and formed into a cylindrical shape. The edges of the formed cylinder are then welded together using specialized welding techniques, such as electric resistance welding or submerged arc welding, to create a seamless, circular cross-section. The welded tubes or pipes may undergo additional processing, such as heat treatment or surface finishing, to enhance their strength, corrosion resistance, and overall quality.

Production inputs

The primary raw material for the production of 730630 steel tubes and pipes is non-alloy steel, which is sourced from steel mills and metal suppliers. Additionally, the industry relies on various consumables, such as welding electrodes, shielding gases, and lubricants, to facilitate the welding and finishing processes. Specialized machinery, including tube-forming equipment, welding machines, and cutting tools, are also essential inputs for this industry.

Production outputs

The primary output of the 730630 industry is welded steel tubes and pipes, which are used in a wide range of applications. These products are often consumed by industries such as 730610 Iron or steel; line pipe of a kind used for oil or gas pipelines for the construction of pipelines, 730620 Iron or steel; casing, tubing and drill pipe, of a kind used in drilling for oil or gas for oil and gas extraction, and 730640 Iron or steel; tubes and pipes, welded, of circular cross-section, other than those of 7306.10 and 7306.20 for general construction and manufacturing purposes.

Revisions to 730630

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 730630. The most recent 1 version of this code (730630) is in the HS v2022 system (this version):

This page shows the most recent version of code 730630.

Family tree for iron or non-alloy steel (excluding cast iron); tubes and pipes (not seamless), welded, of circular cross-section, n.e.c. in chapter 73

    graph LR
    A["<a href='/classifications/hs/v2022/73'>73: Iron or steel articles</a>"]
A --> B["<a href='/classifications/hs/v2022/7306'>7306: Iron or steel (excluding cast iron); tubes, pipes and hollow profiles (not seamless), n.e.c. in chapter 73</a>"]
B --> C["<a href='/classifications/hs/v2022/730630'>730630: Iron or non-alloy steel (excluding cast iron); tubes and pipes (not seamless), welded, of circular cross-section, n.e.c. in chapter 73</a>"]

    B --> D["<a href='/classifications/hs/v2022/730611'>730611: Steel; stainless; line pipe of a kind used for oil or gas pipelines n.e.c. in chapter 73, welded, (not seamless)</a>"]
B --> E["<a href='/classifications/hs/v2022/730619'>730619: Iron or steel (excluding cast iron); line pipe of a kind used for oil or gas pipelines (other than of stainless steel or seamless), n.e.c. in chapter 73</a>"]
B --> F["<a href='/classifications/hs/v2022/730621'>730621: Steel, stainless; casing and tubing of a kind used in drilling for oil and gas, n.e.c. in chapter 73, welded, (not seamless)</a>"]
B --> G["<a href='/classifications/hs/v2022/730629'>730629: Iron or steel (excluding cast iron); casing and tubing of a kind used in drilling for oil and gas (other than stainless steel or seamless), n.e.c. in chapter 73</a>"]
B --> H["<a href='/classifications/hs/v2022/730640'>730640: Steel, stainless; tubes, pipes and hollow profiles, welded, of circular cross-section, n.e.c. in chapter 73</a>"]
B --> I["<a href='/classifications/hs/v2022/730650'>730650: Steel, alloy; tubes, pipes and hollow profiles (other than stainless steel or seamless), welded, of circular cross-section, n.e.c. in chapter 73</a>"]
B --> J["<a href='/classifications/hs/v2022/730661'>730661: Iron or steel (excluding cast iron); tubes, pipes and hollow profiles (not seamless), welded, of square or rectangular cross-section, n.e.c. in chapter 73</a>"]
B --> K["<a href='/classifications/hs/v2022/730669'>730669: Iron or steel (excluding cast iron); tubes, pipes and hollow profiles (not seamless), n.e.c. in chapter 73, welded, of non-circular cross-section (not square or rectangular cross-section)</a>"]
B --> L["<a href='/classifications/hs/v2022/730690'>730690: Iron or steel (excluding cast iron); tubes, pipes and hollow profiles (not seamless), n.e.c. in chapter 73</a>"]

    

    %% Color coordination by level

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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 J level6
class K level6
class L 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