all about bitumen. definition, types, tests, uses, application
Viscosity Grade VG Bitumen 40 , Bitumen VG40
Viscosity Grade VG Bitumen 30, Bitumen VG30
Viscosity Grade VG Bitumen 20, Bitumen VG20
Viscosity Grade VG Bitumen 10, VG10 , Bitumen VG10
Viscosity Grade VG Bitumen (VG 10,VG 30,VG 40)