Chain; stud-link chain, of iron or steel

HS v2017 Code: 731581

About chain; stud-link chain, of iron or steel

HS code 731581 covers the classification of stud-link chain, a critical component in various industrial and maritime applications. This type of chain is primarily made of iron or steel and is known for its exceptional strength, durability, and resistance to wear and tear. Stud-link chain plays a vital role in the global supply chain, facilitating the movement of goods, equipment, and resources across diverse industries, from construction and mining to shipping and offshore operations.

Production process

The production of stud-link chain involves a series of specialized manufacturing processes. The process typically begins with the procurement of high-quality iron or steel raw materials, which are then cut, shaped, and welded into individual chain links. The links are then heat-treated to enhance their strength and resistance to wear. Finally, the individual links are assembled into the desired chain length, with the addition of studs at regular intervals to provide additional stability and support.

Production inputs

The primary inputs required for the production of stud-link chain include iron or steel raw materials, welding equipment, heat-treatment facilities, and specialized machinery for cutting, shaping, and assembling the chain links. Additionally, the industry relies on skilled labor, engineering expertise, and quality control measures to ensure the consistent production of high-performance stud-link chain.

Production outputs

The primary output of HS code 731581 is stud-link chain, which is widely used in various industries. This type of chain is commonly employed in 731582 Chains; welded link, of iron or steel, 731589 Chains, parts thereof, of iron or steel, nes, and 890710 (Floating structures, nes (e.g., rafts, tanks, coffer-dams, landing-stages, buoys and beacons)), among others. The versatility and reliability of stud-link chain make it an essential component in a wide range of applications, from heavy-duty lifting and mooring operations to safety and security systems.

Revisions to 731581

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 731581. The most recent 1 version of this code (731581) is in the HS v2022 system:

This page shows a legacy version of code 731581 ( HS v2017).

Newer versions
Older versions

Family tree for chain; stud-link chain, of iron or steel

    graph LR
    A["<a href='/classifications/hs/v2017/73'>73: Iron or steel articles</a>"]
A --> B["<a href='/classifications/hs/v2017/7315'>7315: Chain and parts thereof, of iron or steel</a>"]
B --> C["<a href='/classifications/hs/v2017/731581'>731581: Chain; stud-link chain, of iron or steel</a>"]

    B --> D["<a href='/classifications/hs/v2017/731511'>731511: Chain; articulated link, roller, of iron or steel</a>"]
B --> E["<a href='/classifications/hs/v2017/731512'>731512: Chain; articulated link, (other than roller), of iron or steel</a>"]
B --> F["<a href='/classifications/hs/v2017/731519'>731519: Chain; articulated link parts, of iron or steel</a>"]
B --> G["<a href='/classifications/hs/v2017/731520'>731520: Chain; skid, articulated link chain and parts thereof, of iron or steel</a>"]
B --> H["<a href='/classifications/hs/v2017/731582'>731582: Chain; welded link chain, of iron or steel</a>"]
B --> I["<a href='/classifications/hs/v2017/731589'>731589: Chain; n.e.c. in heading no. 7315, of iron or steel</a>"]
B --> J["<a href='/classifications/hs/v2017/731590'>731590: Chain; parts n.e.c. in heading no. 7315, of iron or steel</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 J 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