Essential character controls classification of truck-mounted drilling rigs, with separate duty permitted for machinery and vehicle parts.

Truck-mounted drilling equipment retained its essential character as drilling machinery and was classified under Heading 84.23 rather than Heading 87.03, because the drilling unit did not lose its identity merely by being mounted on a vehicle. For additional duty, the unit was capable of separate identification and valuation as drilling equipment and truck components, so bifurcation under Item 68 and Item 34 was justified. The commentary also notes that the classification turns on the essential character of the imported goods, and that separate assessability is permissible where the machinery and vehicle remain distinct for duty purposes.

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Issues: (i) Whether the imported truck-mounted drilling rig was classifiable under Heading 84.23 of the Customs Tariff Act or under Heading 87.03 of the Customs Tariff Act for basic customs duty. (ii) Whether additional duty was correctly levied by treating the drilling unit and the truck part separately under Item 68 and Item 34 of the Central Excise Tariff.

Issue (i): Whether the imported truck-mounted drilling rig was classifiable under Heading 84.23 of the Customs Tariff Act or under Heading 87.03 of the Customs Tariff Act for basic customs duty.

Analysis: The imported goods were drilling equipment mounted on a truck for mobility, but the drilling unit retained its identity and did not become an integral part of the vehicle. The essential nature of the import was that of a drill used for boring and extracting operations. Heading 84.23 covered machinery of that description more aptly than Heading 87.03, which was meant for special purpose motor lorries and vans. The incorrect emphasis on self-propulsion did not affect the final classification because the goods were, in substance, drilling machinery mounted on a vehicle.

Conclusion: The goods were rightly classified under Heading 84.23 of the Customs Tariff Act, and the Revenue's challenge to that classification failed.

Issue (ii): Whether additional duty was correctly levied by treating the drilling unit and the truck part separately under Item 68 and Item 34 of the Central Excise Tariff.

Analysis: The imported unit could be separated for valuation and identification into the drilling equipment and the truck. It was not so integrated that it had to be treated as a single inseparable article for additional duty purposes. Explanation II to Item 34 was not decisive against this treatment, because the goods were equipped with drilling apparatus and not with weight-lifting or similar material-handling equipment. The levy on the drilling equipment under Item 68 and on the vehicle portion under Item 34 was therefore justified.

Conclusion: The levy of additional duty by bifurcating the import between Item 68 and Item 34 of the Central Excise Tariff was upheld.

Final Conclusion: The imported rig was treated as drilling machinery for basic customs duty, while the drilling unit and truck were assessable separately for countervailing duty, leaving the appellants without relief.

Ratio Decidendi: For tariff classification, the essential character of the imported goods governs; where drilling machinery is mounted on a vehicle without losing its identity, it remains classifiable as drilling machinery, and separate identification of the machinery and vehicle permits separate levy of additional duty.

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