Manufacture and job-work valuation of roofing sheets under excise law require inclusion of raw material value and can attract penalty.

Conversion of colour-coated or galvanised steel coil into profiled roofing sheets is treated as manufacture where the process of de-coiling, roll-forming, profiling, crimping and cutting creates a distinct commercial product with different character and use. In job-work clearances, valuation must follow the statutory job-work regime under Section 4 read with Rule 10A and include the value of raw materials supplied by traders, not merely processing charges. Non-disclosure of the true valuation basis in statutory records can justify the extended limitation period, and the same suppression supports penalty where the conduct amounts to conscious undervaluation rather than a mere interpretational dispute.

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Issues: (i) Whether the activity of converting colour-coated or galvanised steel sheets in coil form into profiled roofing sheets amounts to manufacture under excise law; (ii) whether valuation of the job-work clearances is governed by Section 4 read with Rule 10A; (iii) whether the extended period of limitation under Section 11A(4) is invokable; and (iv) whether penalty under Section 11AC is sustainable.

Issue (i): Whether the activity of converting colour-coated or galvanised steel sheets in coil form into profiled roofing sheets amounts to manufacture under excise law.

Analysis: Manufacture was held to depend on whether the process brings into existence a new and distinct product having a different name, character or use and a separate commercial identity. The conversion involved de-coiling, roll-forming, profiling, crimping and cutting, which were found to be cumulative and irreversible processes producing roofing sheets with enhanced rigidity, strength, load-bearing capacity and functional suitability. The change in tariff classification and commercial recognition supported the finding that the input sheets and the final roofing sheets were not the same commodity.

Conclusion: The activity amounts to manufacture.

Issue (ii): Whether valuation of the job-work clearances is governed by Section 4 read with Rule 10A.

Analysis: Once manufacture was established, the assessable value could not be confined to job charges alone. Rule 10A was applied as the specific valuation mechanism for goods manufactured on job-work basis on behalf of another person. The value was required to reflect the transaction value at which the goods entered the stream of commerce, including the value of the raw materials supplied by the traders, rather than only the processing charges.

Conclusion: Valuation under Section 4 read with Rule 10A is applicable and the department's method was upheld.

Issue (iii): Whether the extended period of limitation under Section 11A(4) is invokable.

Analysis: The failure to disclose in statutory records that duty was being paid only on job-work charges, despite manufacture of a distinct excisable product, was treated as a material suppression affecting assessment. Filing of returns did not amount to full disclosure where the returns omitted the facts necessary to determine the correct duty liability. The fact that the activity was detected in audit did not negate suppression where the assessee had not voluntarily disclosed the true valuation basis.

Conclusion: The extended period of limitation is invokable.

Issue (iv): Whether penalty under Section 11AC is sustainable.

Analysis: Penalty was held to follow once suppression of facts with intent to evade duty was established. The same facts that justified invocation of the extended period also satisfied the statutory ingredients for penalty. The case was treated as one of conscious undervaluation, not a mere interpretational dispute.

Conclusion: Penalty under Section 11AC is sustainable.

Final Conclusion: The appeal fails on all substantive issues, and the duty demand, interest, limitation finding and penalty were all sustained.

Ratio Decidendi: A process that cumulatively transforms flat steel inputs into profiled roofing sheets with a distinct commercial identity amounts to manufacture, and where job-work clearances are undervalued by excluding the raw-material value and the omission is not duly disclosed, valuation must follow the statutory job-work regime, the extended period may be invoked, and penalty follows.

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