Subheading 8474.32 · Section XVI
8474.32 Machines; for mixing mineral substances with bitumen
84 Machinery and mechanical appliances, boilers, nuclear reactors; parts thereof
8474 Machinery for sorting, screening, separating, washing, crushing, grinding, mixing or kneading earth, stone, ores in solid form, shaping, moulding machinery for solid mineral fuels
8474.32 For mixing mineral substances with bitumen
Other subheadings under 8474
8474.10 For sorting, screening, separating or washing earth, stone, ores or other mineral substances 8474.20 For crushing or grinding earth, stone, ores or other mineral substances 8474.31 Concrete or mortar mixers 8474.39 For mixing or kneading mineral substances, excluding concrete mixers and machines for mixing mineral substances with bitumen 8474.80 For agglomerating, shaping or moulding solid mineral fuels, ceramic paste, unhardened cements, plastering materials in powder or paste form, machines for forming foundry moulds of sand 8474.90 Parts
For Indian shipping bills you need 8 digits. These six-digit codes are the international HS 2022. India's ITC(HS) classification (DGFT) and Customs Tariff (CBIC) add two more digits for the national tariff line, so pick the 8-digit line under your 6-digit code there, and confirm with your customs broker for anything borderline.