Tunnel Boring Machine Head
A rotary cutting head assembly for small-diameter tunnel excavation in soft ground urban projects. It is classified as other boring machinery for earth, excluding full tunnel boring machines that are often self-propelled.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If presented as a part of boring machinery
Parts for boring machinery are classified under heading 84.31.
If part of a self-propelled tunnel boring machine
Self-propelled boring machinery falls under a different subheading.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Determine if the cutting head is presented as a part or as a complete machine
• If it is a part, classification may fall under heading 84.31
• Provide technical drawings to the CBSA showing its function in tunnel boring
Related Products under Tariff item 8430.49.00
Auger Boring Machine
An auger boring machine is a rotary drilling rig that uses continuous flight augers to bore horizontal holes through soil for pipe jacking in sewer construction. It falls under tariff item 8430.49.00 as other boring machinery for earth, distinct from pile drivers or extractors.
Casing Running Tool
A casing running tool is a hydraulic-powered machine used to install and run steel casing pipes into oil or gas wells during drilling operations. It falls under tariff item 8430.49.00 as other boring or sinking machinery for earth, minerals or ores, specifically for oil and gas field drilling.
Compliant Tower Drilling Platform
A compliant tower drilling platform is a deepwater offshore structure with a flexible steel design that moves with waves, used for extracting oil or gas from beneath the seabed. It falls under tariff item 8430.49.00 as other boring or sinking machinery for minerals, specifically for offshore drilling operations.
Core Drill Rig
A core drill rig is a portable diamond core drilling machine used to extract cylindrical earth or rock samples for geotechnical investigations. It falls under tariff item 8430.49.00 as other boring machinery for earth, specialized for sampling rather than production excavation.
Deepwater Horizon Semi-Submersible Drilling Platform
A semi-submersible drilling platform is a floating offshore structure with drilling rigs, mud systems, and living quarters, designed for deepwater oil extraction. It qualifies under tariff item 8430.49.00 as other boring machinery for minerals, specifically for offshore drilling.
Directional Boring Locator
A directional boring locator is a walkover guidance system with a sonde transmitter used to track the path of an underground boring head. It falls under tariff item 8430.49.00 as part of a boring system, despite being primarily a guidance device, because it is integral to the boring operation.