Quality grits are high durable and mostly preferred products for surface roughering applications before paintings and coatings. Steel grits are divided in to three groups in terms of their application purposes and hardness.
GP Steel Grit (40-50HRC): GP super steel grit rounds off rapidly in use and is particulary suited for removing sand of casting and scaling oxide.
GL Steel Grit (50-60HRC): GL super grit is harder than GP Steel Grit. It loses sharpness during operation and is suited for plate and section preparation.
GH Steel Grit (60-66HRC): GH super grit has maximum hardness to maintain angularity during operation and provides a constant cutting (etching) action. GH super steel grit is specifically designed fora ir blast operations.