CUTTING DISC for metal Suitable for cutting and grinding of carbon u-steel,alloy steel, ductile iron and other materials High speed, long usage life The max safe use of linear speed is 80m/s ,the hardness medium iron to a large amount of wheel wear medium, longer life, especially suitable for cutting and grinding of carbon u-steel,alloy steel, ductile iron and other materials. Widely used in shipbuilding, metallurgy,chemical machinery, pressure vessels,steel pieces and so on. The most widely appliacable.