Wood; railway or tramway sleepers (cross-ties), impregnated, coniferous
HS v2022 Code: 440691
About wood; railway or tramway sleepers (cross-ties), impregnated, coniferous
HS code 440691 covers the classification of impregnated, coniferous railway or tramway sleepers (cross-ties). These wooden sleepers are a critical component of rail infrastructure, providing the foundation for railway tracks and ensuring the stability and safety of rail transportation. As a vital part of the global logistics and transportation network, the production and trade of these sleepers play a significant role in the broader economy.
Production process
The production of impregnated, coniferous railway sleepers typically involves several key steps. First, the raw timber, often sourced from coniferous forests, is harvested and processed into the required sleeper dimensions. The sleepers are then subjected to an impregnation process, where they are treated with preservatives such as creosote or other chemical compounds to enhance their durability and resistance to weathering, pests, and decay. This impregnation process helps to extend the lifespan of the sleepers and ensures their reliable performance in the demanding railway environment.
Production inputs
The main inputs required for the production of HS code 440691 items include coniferous timber, which serves as the primary raw material. Additionally, the industry relies on specialized machinery and equipment for cutting, shaping, and impregnating the sleepers. Chemical preservatives, such as creosote, are also a crucial input for the impregnation process. The availability and quality of these raw materials and resources are essential for the efficient and sustainable production of railway sleepers.
Production outputs
The primary output of HS code 440691 is impregnated, coniferous railway or tramway sleepers. These sleepers are then consumed by the 860700 Railway or tramway track construction material industry, which is responsible for the construction and maintenance of rail infrastructure. The sleepers may also be used in other applications, such as 440920 Wood; staves, whether or not planed, sanded or end-jointed or 440929 Wood; staves, whether or not planed, sanded or end-jointed, coniferous.
Revisions to 440691
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 440691. The most recent 1 version of this code (440691) is in the HS v2022 system (this version):
This page shows the most recent version of code 440691.
Older versions
Family tree for wood; railway or tramway sleepers (cross-ties), impregnated, coniferous
graph LR A["<a href='/classifications/hs/v2022/44'>44: Wood and articles of wood; wood charcoal</a>"] A --> B["<a href='/classifications/hs/v2022/4406'>4406: Railway or tramway sleepers (cross-ties) of wood</a>"] B --> C["<a href='/classifications/hs/v2022/440691'>440691: Wood; railway or tramway sleepers (cross-ties), impregnated, coniferous</a>"] B --> D["<a href='/classifications/hs/v2022/440611'>440611: Wood; railway or tramway sleepers (cross-ties), not impregnated, coniferous</a>"] B --> E["<a href='/classifications/hs/v2022/440612'>440612: Wood; railway or tramway sleepers (cross-ties), not impregnated, non-coniferous</a>"] B --> F["<a href='/classifications/hs/v2022/440692'>440692: Wood; railway or tramway sleepers (cross-ties), impregnated, non-coniferous</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 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