Bituminous mixtures classification under Heading 27.15 confirmed; prior declarations and unreliable lab reports did not alter the tariff result.

Cut-back bitumen and related bituminous mixtures were treated as classifiable under Heading 27.15 rather than Heading 32.10 because the manufacturing records and initial chemical examination showed bitumen or asphalt mixed with volatile solvents, matching the tariff description of bituminous mixtures. Classification was held to depend on the current tariff text, interpretative rules, chapter notes and HSN guidance, and prior declarations under an earlier tariff item did not create estoppel. A later laboratory report was rejected as unreliable due to delay, inconsistency with the earlier report, lack of explanation for the alleged epoxy resin, and failure to provide the requested detailed composition. Test reports for only four products could not be extended to the remaining items without supporting evidence.

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Issues: Whether cut-back bitumen and the other bituminous mixtures manufactured by the appellant were classifiable under Heading 27.15 of the Central Excise Tariff Act, 1985 or under Heading 32.10 of the Central Excise Tariff Act, 1985; and whether the laboratory reports relied upon by the Revenue could be applied to all 30 products despite samples and reports being available only for a few items.

Analysis: The products were shown by the manufacturing records and the initial chemical examination to consist of bitumen or asphalt with volatile solvents, which accords with the tariff description of bituminous mixtures under Heading 27.15. The fact that the appellant had earlier filed declarations under a different old tariff item did not preclude a fresh claim under the new tariff, since classification must depend on the terms of the current tariff, interpretative rules, chapter notes and HSN guidance, and there is no estoppel in classification. The second laboratory report was found unreliable because it was delayed, inconsistent with the earlier report, unsupported by any explanation for the alleged epoxy resin, and not furnished with the requested detailed composition. The Court also noted that the Revenue had samples and test reports only for four products, so those reports could not be extended to the remaining items without evidence.

Conclusion: The 30 products were held to be classifiable under Heading 27.15, and the Revenue's classification under Heading 32.10 was rejected.

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