Microtunnel Boring Rig
A microtunnel boring rig is a small-diameter rock tunnelling machine used for utilities in mineral-bearing areas. It is classified under 8430.39.00 as other tunnelling machinery, as it is not a full-size tunnel boring machine or a roadheader.
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 |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the rig is self-propelled boring machinery
Self-propelled boring machinery for tunnelling is classified under this subheading.
If the rig is not self-propelled
Non-self-propelled boring machinery may be classified here.
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
• Classify the microtunnel boring rig as a complete machine under 8430.39.00, and include all guidance systems if integral
• Provide specifications showing it is for rock tunnelling
• Verify if the rig is self-propelled, which may affect classification
Related Products under Tariff item 8430.39.00
Boom-Type Roadheader
A boom-type roadheader is a hydraulically operated machine with a rotating boom and cutter head, used for heading development in coal and rock tunnels. It falls under tariff item 8430.39.00 as 'other' coal or rock cutters and tunnelling machinery, since it is not a self-propelled continuous miner or a longwall shearer.
Coal Auger Miner
A coal auger miner uses a helical auger to recover coal from pillars or seams, typically in surface or highwall mining. It is classified under 8430.39.00 as other coal cutting machinery, as it is not a continuous miner or longwall shearer.
Coal Plough
A coal plough is a scraping device used to cut thin coal seams, typically in longwall mining, and it shears coal from the face onto a conveyor. It is classified under 8430.39.00 as other coal cutting machinery, as it is not a rotating cutter or a self-propelled machine.
Coal Winning Machine
A coal winning machine integrates an armored face conveyor with a cutting mechanism for underground coal extraction, often in longwall operations. It is classified under 8430.39.00 as other coal cutting machinery, as it is not a continuous miner or a shearer.
Continuous Miner for Coal
A continuous miner for coal is a self-propelled machine with cutting drums that extracts coal from seams in underground mines, continuously gathering and loading material. It falls under 8430.39.00 as other coal cutters, as it is not a roadheader or longwall shearer.
Hydraulic Rock Cutter
A hydraulic rock cutter is a boom-mounted hydraulic shear used for selective rock cutting in tunnelling and mining. It is classified under 8430.39.00 as other rock cutters, as it is not a roadheader or a tunnel boring machine.