... rock, leather,rubber,etc.It is also broadly used as refractory material and metallurgical additive.Abrasives gradeGrit size: 16#,20#, ... 500#,600#,800#,1000#,1200#,1500# 2000#,2500#,3000#,4000#Refractory grade1-0mm,3-1mm,5-3mm,5-8mm -200mesh,- ... suitable for grinding high-speed,high carbon steel2.high-grade refractory materials3.abrasives tool4.grinding and polishing5.ceramics6.LED7.sandblasting8. ...