Tariff classification turns on trade identity and primary function: insulated detonator lead wire falls under the electrical-conductor heading.

Tariff classification depended on the goods' primary function and common trade identity. PVC insulated galvanised or tinned steel wire used as a detonator lead wire was not treated as an electric wire or cable under the residuary-era tariff because the record did not show it was ordinarily known and used as such; the residuary entry applied only where no specific entry reasonably covered the goods. Under the Central Excise Tariff, the same product answered the description of an insulated electric conductor under Heading 85.44, but it was not itself a detonator or igniter component under Heading 36.03.

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Issues: (i) Whether the product, being PVC insulated galvanised/tinned steel wire used in detonators, was classifiable under Tariff Item 33B of the erstwhile tariff or under Tariff Item 68 as a residuary entry. (ii) Whether the same product was classifiable under Heading 85.44 of the Central Excise Tariff, 1985 or under Heading 36.03 as a detonator or igniter component.

Issue (i): Whether the product, being PVC insulated galvanised/tinned steel wire used in detonators, was classifiable under Tariff Item 33B of the erstwhile tariff or under Tariff Item 68 as a residuary entry.

Analysis: The product was an insulated wire, but the decisive question under the old tariff was whether it was ordinarily used and known in trade as an electric wire or cable. The wording of Tariff Item 33B covered electric wires and cables, all sorts not otherwise specified, but the material on record showed that the item was used as a lead wire in detonators and not as an electric conductor in normal commercial parlance. The department did not establish that it was commonly identified as an electric wire or cable. Since Tariff Item 68 was residuary, it applied only where no specific entry covered the goods.

Conclusion: The product was classifiable under Tariff Item 68 and not under Tariff Item 33B.

Issue (ii): Whether the same product was classifiable under Heading 85.44 of the Central Excise Tariff, 1985 or under Heading 36.03 as a detonator or igniter component.

Analysis: Heading 85.44 covered insulated electric conductors, including wires fitted with connectors, and the product answered that description on its physical character. For classification under Heading 36.03, it was necessary to show that the goods were in substance a detonator, igniter, or a component specifically falling within that heading. The evidence showed that the item was an insulated wire used in the detonator system, but not itself a detonator or igniter as such. The functional and trade identity of the goods supported classification as an insulated electric conductor rather than as an explosive-device component.

Conclusion: The product was classifiable under Heading 85.44 and not under Heading 36.03.

Final Conclusion: The majority held that the goods were not classifiable under the residuary or detonator-related headings claimed by the assessee and were instead covered by the electrical-conductor heading, resulting in allowance of the Revenue's appeal.

Ratio Decidendi: For tariff classification, the goods must be identified by their primary function and common trade understanding, and a residuary entry can be used only when no specific entry reasonably covers the goods.

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