Impact crusher HS type for gravel and hard stones, equipped with three series of adjustable apron, which operates separately for best control on final product. heavy upper Impact apron fully made of cast manganese steel, middle and lower apron fabricated of heavy duty welded Frame and bolted with manganese steel Wear plates. Heavy duty Welded disc rotor of machine creates high inertia and torque which cause uniform rotation in full loading and least consumption of electricity. Hammers, anvils and all wearing parts have been made of long life foundry cast iron manganese steel.