Chain; stud-link chain, of iron or steel

HS v2022 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 chains play 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 transportation.

Production process

The production of stud-link chain involves a series of specialized manufacturing processes. The raw materials, typically iron or steel, are first melted and cast into the desired shape and size. The individual chain links are then forged, stamped, or machined to create the characteristic stud-link design. This design, with its interlocking studs, enhances the chain's strength and stability. The finished links are then heat-treated and coated, if necessary, to improve their corrosion resistance and overall durability.

Production inputs

The primary inputs required for the production of stud-link chain include high-quality iron or steel, specialized machinery for forging and shaping the links, and various tools and equipment for the manufacturing process. Additionally, energy sources, such as electricity or natural gas, are needed to power the production facilities. Skilled labor, including welders, machinists, and quality control personnel, is also a crucial input for this industry.

Production outputs

The primary output of HS code 731581 is the stud-link chain itself, which is used in a wide range of applications. These chains are commonly employed in the 731582 Chain; welded link, of iron or steel, 731589 Chain, of iron or steel, nes, and 731520 Anchors, grapnels and parts thereof, of iron or steel industries, where their strength and reliability are essential. Additionally, the stud-link chain may be used in the 842833 Lifting, handling, loading or unloading machinery: Continuous-action elevators and conveyors, for goods or materials and 731100 (Reservoirs, tanks, vats and similar containers, of iron or steel, for any material (excluding compressed or liquefied gas), of a capacity exceeding 300 l, whether or not lined or heat-insulated, but not fitted with mechanical or thermal equipment) sectors.

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 version):

This page shows the most recent version of code 731581.

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

    graph LR
    A["<a href='/classifications/hs/v2022/73'>73: Iron or steel articles</a>"]
A --> B["<a href='/classifications/hs/v2022/7315'>7315: Chain and parts thereof, of iron or steel</a>"]
B --> C["<a href='/classifications/hs/v2022/731581'>731581: Chain; stud-link chain, of iron or steel</a>"]

    B --> D["<a href='/classifications/hs/v2022/731511'>731511: Chain; articulated link, roller, of iron or steel</a>"]
B --> E["<a href='/classifications/hs/v2022/731512'>731512: Chain; articulated link, (other than roller), of iron or steel</a>"]
B --> F["<a href='/classifications/hs/v2022/731519'>731519: Chain; articulated link parts, of iron or steel</a>"]
B --> G["<a href='/classifications/hs/v2022/731520'>731520: Chain; skid, articulated link chain and parts thereof, of iron or steel</a>"]
B --> H["<a href='/classifications/hs/v2022/731582'>731582: Chain; welded link chain, of iron or steel</a>"]
B --> I["<a href='/classifications/hs/v2022/731589'>731589: Chain; n.e.c. in heading no. 7315, of iron or steel</a>"]
B --> J["<a href='/classifications/hs/v2022/731590'>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