Section 05 Mineral products 26 Ores, slag and ash 26 18 Granulated slag (slag sand) from the manufacture of iron or steel 26 18 00 Granulated slag (slag sand) from the manufacture of iron or steel. 26 18 00 00 Granulated slag (slag sand) from the manufacture of iron or steel. Commodity Code Description 26 18 00 00 000 Granulated slag (slag sand) from the manufacture of iron or steel.