https://www.taxtmi.com/circulars?id=7157 Petroleum bitumen, whether straight grade or air blown, is classifiable under the petroleum bitumen tariff headings according to whether it is packed in drums or supplied in bulk; air modified bitumen remains within the same heading as un blown bitumen. Where blown grade bitumen is produced from duty paid straight grade bitumen, no additional excise duty is payable on the blown grade product. en-us Tue, 16 Jun 1987 00:00:00 +0530 Thu, 09 Jul 2009 14:18:00 +0530 TaxTMI RSS Generator https://www.taxtmi.com/circulars?id=7157 Petroleum bitumen, whether straight grade or air blown, is classifiable under the petroleum bitumen tariff headings according to whether it is packed in drums or supplied in bulk; air modified bitumen remains within the same heading as un blown bitumen. Where blown grade bitumen is produced from duty paid straight grade bitumen, no additional excise duty is payable on the blown grade product. Circulars Central Excise Tue, 16 Jun 1987 00:00:00 +0530 https://www.taxtmi.com/circulars?id=7157