... pollution 3.Angular shape mor sharp bearing steel grit1. Production specification: G10,G12, G14, G16, G18, G25, G40, G50, G80 ... , pre-treatment of surface or reinforcement.(3) ≥60HRC:High hardness, sharp edges remain during operation, mainly used for marble cutting ... alloy angular steel grit is of good metallographic structure, uniform hardness, long anti-fatigue life, and high impact and wearing ...