Specific tariff classification of steel tubes prevails over machinery-part treatment, defeating heat exchanger exemption claim.

Seamless carbon steel tubes imported in fixed lengths were treated as classifiable under Heading 73.04, because there was no indication that they were identifiable parts of heat exchangers. A specific tariff heading for tubes and pipes must be applied before any classification as machinery parts, and the exemption notification could not displace that specific tariff treatment. The goods were therefore not eligible for concessional customs duty as components of heat exchangers and fell within the general category of steel tubes and pipes.

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Issues: Whether seamless carbon steel tubes imported in fixed lengths were entitled to concessional customs duty as components of heat exchangers under Notification No. 155/86-Cus. dated 01-03-1986, or whether they were correctly classifiable under Heading 73.04 of the Customs Tariff.

Analysis: The imported goods were seamless carbon steel tubes and there was no indication that they had been imported in the form of identifiable parts of heat exchangers. A specific tariff heading for tubes and pipes must be applied before resorting to a classification as parts of machinery. The material on record and the earlier Tribunal view treated special quality steel tubes as remaining within the general category of pipes and tubes of steel under Heading 7304.49, and the exemption notification did not override that specific classification.

Conclusion: The goods were held to be classifiable under Heading 73.04 and not eligible for treatment as components of heat exchangers for the claimed exemption. The issue was decided against the assessee and in favour of the Revenue.

Ratio Decidendi: Where imported goods are specifically classifiable under a tariff heading for tubes and pipes, they cannot be treated as parts of machinery for exemption purposes unless the specific classification is first ruled out.

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