HSN code HSN description GST 2517 Pebbles, Gravel, Broken Or Crushed Stone, Of A Kind Commonly Used For Concrete Aggregates, For Road Metalling Or For Railway Or Other Ballast, Shingle And Flint, Whether Or Not Heat-Treated; Macadam Of Slag, Dross Or Similar Industrial Waste, Whether Or Not Incorporating The Materials Cited In The First Part…